Publications

[2017]

  • Y. Shibata, J. Tsutsumi, S. Matsuoka, H. Minemawari, S. Arai, R. Kumai,and T. Hasegawa, "Unidirectionally Crystallized Stable n-type Organic Thin-Film Transistors Based on Solution-Processable Donor-Acceptor Compounds", Adv. Electron. Mater. 1700097 (2017).
  • M.Yoneya , H.Minemawari , T.Yamada, and T.Hasegawa, "Interface-Mediated Self-Assembly in Inkjet Printing of Single-Crystal Organic Semiconductor Films", J. Phys. Chem. C, 121 , (16), 8796–8803 (2017).
  • J. Tsutsumi, S. Matsuoka, I. Osaka, R. Kumai, and T. Hasegawa, "Reduced exchange narrowing caused by gate-induced charge carriers in high-mobility donor-acceptor copolymers", Phys. Rev. B 95, 115306 (2017).
  • Sachio Horiuchi, Kensuke Kobayashi, Reiji Kumai, and Shoji Ishibashi, "Proton tautomerism for strong polarization switching",Nature Commun. 8, 14426-1-9 (2017).
  • K. Aoshima, S. Arai, K. Fukuhara, T. Yamada, and T. Hasegawa "Surface modification of printed silver electrodes for efficient carrier injection in organic thin-film transistors",Organic Electronics 41, 137 (2017).
  • H.Minemawari, M.Tanaka, S.Tsuzuki, S.Inoue, T.Yamada, R.Kumai, Y.Shimoi, and T.Hasegawa "Enhanced Layered-Herringbone Packing due to Long Alkyl Chain Substitution in Solution-Processable Organic Semiconductors",Chem. Mater. 29 (3), pp 1245–1254(2017).
  • Collaborated Research

  • M. Nakamura, S. Horiuchi, F. Kagawa, N. Ogawa, T. Kurumaji, Y. Tokura and M. Kawasaki, "Shift current photovoltaic effect in a ferroelectric charge-transfer complex", Nature Commun 8, 281(2017).
  • F. Kagawa, S. Horiuchi, and Y. Tokura, "Quantum phenomena emerging near a ferroelectric critical point in a donor-acceptor organic charge-transfer complex", Crystals, 7(4), 106 (2017).
  • K. Iwano, Y. Shimoi, T. Miyamoto, D. Hata, M. Sotome, N. Kida, S. Horiuchi, and H. Okamoto, "Ultrafast Photoinduced Electric-Polarization Switching in a Hydrogen-Bonded Ferroelectric Crystal",Phys. Rev. Lett. 118,107404 .(2017).

[2016]

  • S. Inoue, H. Minemawari, J. Tsutsumi, T. Hamai, S. Arai, T. Yamada, S. Horiuchi, M. Tanaka, M. Yoneya, R. Kumai and T.Hasegawa, "Molecular Requirements for Printable Organic Semiconductors in 7-Alkyl-2-phenyl[1]benzothieno[3,2-b][1]benzothiophenes (Ph-BTBT-Cn’s)",MRS Advances.1, 38. pp 2653-2658 (2016).
  • Toshikazu Yamada, Katsuo Fukuhara, Ken Matsuoka, Hiromi Minemawari, Jun’ya Tsutsumi, Nobuko Fukuda, Keisuke Aoshima, Shunto Arai, Yuichi Makita, Hitoshi Kubo, Takao Enomoto, Takanari Togashi, Masato Kurihara, and Tatsuo Hasegawa, "Nanoparticle chemisorption printing technique for conductive silver patterning with submicron resolution", Nature Commun. 7, 11402-1-9 (2016).
  • Collaborated Research

  • H. Koike, J. Tsutsumi, S. Matsuoka, K. Sato, T. Hasegawa, and K. Kanai, "Electronic structure of stable n-type semiconducting molecular complex(diC8-BTBT)(TCNQ) studied by ultraviolet photoemission and inverse photoemission spectroscopy",Org. Electron.39,184.(2016).
  • Katelyn P. Goetz, Jun’ya Tsutsumi, Sujitra Pookpanratana, Jihua Chen, Nathan S. Corbin, Rakesh K. Behera, Veaceslav Coropceanu, Curt A. Richter, Christina A. Hacker, Tatsuo Hasegawa, and Oana D. Jurchescu, "Polymorphism in the 1:1 charge-transfer complex DBTTF-TCNQ and its effects on optical and electronic properties",Adv. Electron. Mater. 2.1600203.(2016).
  • F. Kagawa, N. Minami, S. Horiuchi, and Y. Tokura, "Athermal domain-wall creep near a ferroelectric quantum critical point",Nat. Commun 7 10675 (2016).
  • H.Koike, M.Chikamatsu, R.Azumi , J.Tsutsumi , K.Ogawa , W.Yamane , T.Nishiuchi , T.Kubo , T.Hasegawa , and K.Kanai,"Stable Delocalized Singlet Biradical Hydrocarbon for Organic Field-Effect Transistors",Adv. Funct. Mater, 26, 277 (2016).

[2015]

  • M. Yoneya, S. Tsuzuki and M. Aoyagi, "Simulation of metal-organic framework self-assembly", Phys. Chem. Chem. Phys., 17, 8649-8652 (2015).
  • M. Yoneya, A. Miyamoto, Y. Shimizu, A. Fujii, and M. Ozaki,“Origin of the High Carrier Mobilities of Nonperipheral Octahexyl Substituted Phthalocyanine”, J. Phys. Chem. C, 119(42), 23852-23858 (2015).
  • Yuki Noda, Toshikazu Yamada, Kensuke Kobayashi, Reiji Kumai, Sachio Horiuchi, Fumitaka Kagawa and Tatsuo Hasegawa, "Few-Volt Operation of Printed Organic Ferroelectric Capacitor", Advanced Materials,Vol. 27, Issue 41, Pages 6475-6481 (2015) .
  • S. Horiuchi, Y. Noda, T. Hasegawa, F. Kagawa, and S. Ishibashi, "Correlated Proton Transfer and Ferroelectricity along Alternating Zwitterionic and Nonzwitterionic Anthranilic Acid Molecules",Chem. Mater. Vol. 27, No. 18, pp 6193–6197(2015).
  • Y. Noda, H. Minemawari, H. Matsui, T. Yamada, S. Arai, T. Kajiya, M. Doi, andT. Hasegawa, "Underlying Mechanism of Inkjet Printing of Uniform Organic Semiconductor Films Through Antisolvent Crystallization",Adv. Funct. Mater. Volume 25, Issue 26, pages 4022–4031, (2015).
  • J. Tsutsumi, S. Matsuoka, T. Yamada, and T. Hasegawa, "Gate-modulation imaging of organic thin-film transistor arrays:Visualization of distributed mobility and dead pixels", Org. Electron. 25, 289-294 (2015).
  • S.Horiuchi, K.Kobayashi, R.Kumai, N.Minami, F.Kagawa, Y.Tokura, "Quantum Ferroelectricity in Charge-Transfer Complex Crystals", Nature Commun. 6 , 7469-1-7(2015).
  • S.Inoue, H.Minemawari, J.Tsutsumi, M.Chikamatsu,T.Yamada, S.Horiuchi, M.Tanaka, R.Kumai, M.Yoneya, and T.Hasegawa, "Effects of Substituted Alkyl Chain Length on Solution-Processable Layered Organic Semiconductor Crystals", Chem. Mater. 27(11), 3809-3812 (2015).
  • J. Tsutsumi, S. Matsuoka, S. Inoue, H. Minemawari, T. Yamada and T. Hasegawa, "N-type field-effect transistors based on layered crystalline donor-acceptor semiconductors with dialkylated benzothienobenzothiophenes as electron donors", J. Mater. Chem. C 3, 1976 (2015).
  • Y. Shibata, J. Tsutsumi, S. Matsuoka, K. Matsubara, Y. Yoshida, M.Chikamatsu and T. Hasegawa,"Uniaxially oriented polycrystalline thin films and air-stable n-type transistors based on donor-acceptor semiconductor (diC8BTBT)(FnTCNQ) [n = 0, 2, 4]",Appl. Phys. Lett.106.143303 (2015).
  • Collaborated Research

  • R. Singla, G.Cotugno, S.Kaiser, M.Först, M.Mitrano, H.Y.Liu, A.Cartella, C.Manzoni, H. Okamoto, T.Hasegawa, S.R.Clark, D.Jaksch, and A.Cavalleri,"THz-Frequency Modulation of the Hubbard U in an Organic Mott Insulator",Phys. Rev. Lett. 115, 187401(2015) .
  • Hiroyuki Yoshida, Kazuto Yamada, Jun'ya Tsutsumi, and Naoki Sato,"Complete description of ionization energy and electron affinity in organic solids: Determining contributions from electronic polarization,energy band dispersion, and molecular orientation",Phys. Rev. B 92, 075145(2015) .
  • M.Sotome, N.Kida, S.Horiuchi, and H.Okamoto,"Terahertz radiation imaging of ferroelectric domain topography in room-temperature hydrogen-bonded supramolecular ferroelectrics ",ACS Photonics,Vol.2 (9) pp 1373–1383(2015) .
  • T.Umanodan, S.Tanaka, S.Naruse, T.Ishikawa, K.Onda, S.Koshihara, S.Horiuchi, and Y.Okimoto,"Different Time-Scale Relaxation Dynamics in Organic Supramolecular Ferroelectrics Studied by Linear and Nonlinear Spectroscopy",J. Phys. Soc. Jpn.,84(7) 073707(2015) .
  • T. Takeda, J. Tsutsumi, T. Hasegawa, S. Noro, T. Nakamura and T.Akutagawa,"Electron-deficient acene-based liquid crystals:dialkoxydicyanopyrazinoquinoxalines",J. Mater. Chem. C 3 3016.(2015).

[2014]

  • J. Tsutsumi, T. Yamada and T. Hasegawa, "Electroabsorption study of charge-transfer excited state in donor-acceptor-type polymer", Trans. Mat. Res. Soc. Japan 39, 217 (2014).
  • J. Tsutsumi, H. Matsuzaki, N. Kanai, T. Yamada and T. Hasegawa, "Formation of relaxed charge-transfer excitons in donor-acceptor-type polymer solar cells", Jpn. J. Appl. Phys. 53, 05HB12 (2014).
  • H. Minemawari, T. Yamada and T. Hasegawa,"Crystalline film growth of TIPS-pentacene by double-shot inkjet printing technique",Jpn. J. Appl. Phys., 53, 05HC10 (2014).
  • H. Minemawari, J. Tsutsumi, S. Inoue, T. Yamada, R. Kumai and T. Hasegawa,"Crystal structure of asymmetric organic semiconductor 7-decyl-2-phenyl[1]benzothieno[3,2-b][1]benzothiophene",Applied Physics Express 7 091601(2014).
  • S. Horiuchi, K. Kobayashi, R. Kumai, and S. Ishibashi, "Ionic versus Electronic Ferroelectricity on Donor-Acceptor Molecular Sequence",Chem. Lett. (Highlight Review) 43, 26-35(2014).
  • Collaborated Research

  • K.Kobayashi,S.Horiuchi,S.Ishibashi,F.Kagawa,Y.Murakami,and R.Kumai,"Structure–Property Relationship of Supramolecular Ferroelectric [H-66dmbp][Hca] Accompanied by High Polarization, Competing Structural Phases, and Polymorphs",Chemistry - A European Journal Vol.20(52),17515–17522.(2014) .
  • W. Guan, N. Kida, M. Sotome, Y. Kinoshita, R. Takeda, A. Inoue, S.Horiuchi, and H. Okamoto, "Terahertz radiation by optical rectification in a hydrogen-bonded organic molecular ferroelectric crystal, 2-phenylmalondialdehyde ", Jpn. J. Appl. Phys. 53,09PD07-1-5.(2014).
  • M. Sotome, N. Kida, S. Horiuchi, and H. Okamoto"Visualization of ferroelectric domains in a hydrogen-bonded molecular crystal using emission of terahertz radiation", Appl. Phys. Lett. 105, 041101 (2014).
  • F. Kagawa, S. Horiuchi, N. Minami, S. Ishibashi, K. Kobayashi, R. Kumai,Y. Murakami, and Y. Tokura, "Polarization switching ability dependent on multidomain topology in a uniaxial organic ferroelectric", Nano Lett. 14(1), pp 239-243 (2014).

[2013]

  • J. Tsutsumi, H. Matsuzaki, N. Kanai, T. Yamada, and T. Hasegawa, "Chargeseparation of charge-transfer excitons in donor-acceptor polymer solar cells",J. Phys. Chem. 117, 16769 (2013).
  • Y. Noda, H. Matsui, H. Minemawari, T. Yamada, and T. Hasegawa, ”Observation and simulation of microdroplet shapes on surface-energy-patterned substrates: Contact line engineering for printed electronics",J. Appl. Phys. 114, 044905 (2013).
  • S. Horiuchi, R. Kumai, Y. Tokura, High-Temperature and Pressure-Induced Ferroelectricity in Hydrogen-Bonded Supramolecular Crystals of Anilic Acids and 2,3-Di(2-pyridinyl)pyrazine,J. Am. Chem. Soc. 135(11), 4492-4500 (2013).
  • Collaborated Research

  • T. Miyamoto, K. Kimura, T. Hamamoto, H. Uemura, H. Yada, H. Matsuzaki, S.Horiuchi, and H. Okamoto, "Measurement of a Photoinduced Transition from a Nonordered Phase to a Transient Ordered Phase in the Organic Quantum-Paraelectric Compound dimethyltetrathiafulvalene dichlorodibromo-p-benzoquinone Using Femtosecond Laser Irradiation", Phys. Rev. Lett. 111, 187801 (2013).
  • K. Shibuya, J. Tsutsumi, T. Hasegawa, and A. Sawa, "Fabrication and Raman scattering study of epitaxial VO2 films on MgF2 (001) substrates", Appl. Phys. Lett. 103, 021604 (2013).
  • R. Sawada, H. Uemura, M. Sotome, H. Yada, N. Kida, K. Iwano, Y.Shimoi, S. Horiuchi, H. Okamoto, "Large second-order optical nonlinearity in a ferroelectric molecular crystal of croconic acid with strong intermolecular hydrogen bonds", Appl. Phys. Lett. 102(16), 162901-1-4 (2013).
  • K. Kobayashi, R. Kumai, S. Horiuchi, "Successive Phase Transitions and Ferroelectric Domain State in Supramolecular Ferroelectric Phenazine-Chloranilic Acid (in Japanese)", J. Cryst. Soc. Jpn. 55,No.2, 135-141 (2013).

[2012]

  • S. Horiuchi, F. Kagawa, K. Hatahara, K. Kobayashi, R. Kumai, Y. Murakami,Y. Tokura, Above-room-temperature ferroelectricity and antiferroelectricity in benzimidazoles. Nat. Commun. 3:1308 doi: 10.1038/ncomms2322 (2012).
  • J. Tsutsumi, H. Matsui, T. Yamada, R. Kumai, and T. Hasegawa, "Generation and Diffusion of Photocarriers in Molecular Donor-Acceptor Systems: Dependence on Charge-Transfer Gap Energy", J. Phys. Chem. C 116, 23957-23964 (2012).
  • Hiroyuki Matsui , Yuki Noda , and Tatsuo Hasegawa , "Hybrid Energy-Minimization Simulation of Equilibrium Droplet Shapes on Hydrophilic/Hydrophobic Patterned Surfaces ", Langmuir, 28 (44), pp 15450-15453,(2012).
  • M. Ikawa, T. Yamada, H. Matsui, H. Minemawari, J. Tsutsumi, Y. Horii, M. Chikamatsu, R. Azumi, R. Kumai, and T. Hasegawa, "Simple push coating of polymer thin-film transistors", Nat. Commun. 3:1176 doi: 10.1038/ncomms2190 (2012).
  • K. Kobayashi, S. Horiuchi, R. Kumai, F. Kagawa, Y. Murakami, Y. Tokura, "Electronic Ferroelectricity in a Molecular Crystal with Large Polarization Directing Antiparallel to Ionic Displacement", Phys. Rev. Lett. 108 , 237601.(2012).
  • H. Matsui, D. Kumaki, E. Takahashi, K. Takimiya, S. Tokito, and T. Hasegawa ,"Correlation between interdomain carrier hopping and apparent mobility in polycrystalline organic transistors as investigated by electron spin resonance ", Phys. Rev. B 85.035308 (2012).
  • R. Kumai, S. Horiuchi, J. Fujioka, and Y. Tokura , "Ferroelectricity and Pressure-Induced Phenomena Driven by Neutral Ionic Valence Instability of Acid-Base Supramolecules", J. Am. Chem. Soc. 134(2), 1036-1046 (2012).
  • Collaborated Research

  • K. Kobayashi, R. Kumai, S. Horiuchi, "Electronic ferroelectricity in organic crystals" Kotai Butsuri (in Japanese) 47,No.12, 757 (2012) .
  • F. Kagawa, K. Hatahara, S. Horiuchi, Y. Tokura, "Domain-wall dynamics coupled to proton motion in a hydrogen-bonded organic ferroelectric", Phys. Rev. B 85, 220101(R) (2012) (Editor's Suggestion) .
  • S. Ishibashi, S. Horiuchi, R. Kumai, K. Terakura, "First-principles calculations of spontaneous polarization for TTF-QBrCl3", Physica Status Solidi B. , Vol. 249, 1008-1011 (2012).
  • H. Minemawari, J. Fe F. Jose, Y. Takahashi, T. Naito & T. Inabe, "Structual Characteristics in a Stable Metallic ET Salt with Unusually High Oxidation State (ET:Bis(ethylenedithio)tetrathiafulvalene)", Bull. Chem. Soc. Jpn. , Vol. 85, 335-340 ( 2012).
  • Andrey S. Mishchenko, Hiroyuki Matsui, and Tatsuo Hasegawa , "Distribution of localized states from fine analysis of electron spin resonance spectra of organic semiconductors: Physical meaning and methodology", Phys. Rev. B 85.085211 (2012).

[2011]

  • H. Minemawari, T. Yamada, H. Matsui, J. Tsutsumi, S. Haas, R. Chiba, R. Kumai & T. Hasegawa , "Inkjet printing of single-crystal films", Nature , 475, 364-367 ( 2011).
  • S. Horiuchi, "Ferroelectricity in Organic Molecular Crystals", Mol. Sci. (in Japanese) vol.5, A0041 (2011).
  • S. Horiuchi, R. Kumai, and Y. Tokura, "Hydrogen-Bonding Molecular Chains for High-Temperature Ferroelectricity", Adv. Mater. 23, 2098 (2011).
  • Collaborated Research

  • M. Ohkura, Y. Ishige, R. Sawada, H. Matsuzaki,*, Y. Nogami, H. Nishikawa, M. Yamashita, S. Horiuchi, and H. Okamoto, "Optical and structural studies of a two-dimensional organic Mott insulator dimethylphenazine-tetrafluorotetracyanoquinodimethane", Phys. Rev. B 84, 085136 (2011).
  • A. Stroppa, D. Di Sante, S. Horiuchi, Y. Tokura, D. Vanderbilt, S. Picozzi, "Polar distortions in hydrogen-bonded organic ferroelectrics", Phys. Rev. B 84, 014101 (2011).
  • S. Wall, D. Brida, S. R. Clark, H. P. Ehrke, D. Jaksch, A. Ardavan, S. Bonora, H.Uemura, Y. Takahashi, T. Hasegawa, H. Okamoto, G. Cerullo A. Cavalleri, "Quantum interference between charge excitation paths in a solid-state Mott insulator", Nature Physics Volume: 7 Pages: 114-118 (2011).
  • Shoichi Tao, Hiroyuki Matsuzaki, Hirotaka Uemura, Hiroyuki Yada, Takafumi Uemura,Jun Takeya, Tatsuo Hasegawa, and Hiroshi Okamoto, "Optical pump-probe spectroscopy of photocarriers in rubrene single crystals", Phys. Rev. B 83, 075204 (2011).
  • K. Ishizaka, M. S. Bahramy, H. Murakawa, M. Sakano, T. Shimojima,T. Sonobe, K. Koizumi, S. Shin, H. Miyahara, A. Kimura, K. Miyamoto, T. Okuda, H. Namatame, M. Taniguchi, R. Arita, N. Nagaosa, K. Kobayashi, Y. Murakami, R. Kumai, Y. Kaneko, Y. Onose, and Y. Tokura, "Giant Rashba-type spin splitting in bulk BiTeI", Nature Mat. 10, 521?526 (2011).
  • M. Uchida, K. Ishizaka, P. Hansmann, Y. Kaneko, Y. Ishida, X. Yang, R. Kumai, A. Toschi, Y. Onose, R. Arita, K. Held, O. K. Andersen, S. Shin, and Y. Tokura, "Pseudogap of Metallic Layered Nickelate R2-xSrxNiO4 (R=Nd,Eu) Crystals Measured Using Angle-Resolved Photoemission Spectroscopy", Phys. Rev. Lett. 106, 027001-1-027001-4 (2011).

[2010]

  • H. Matsui, A. S. Mishchenko, and T. Hasegawa, "Distribution of Localized States from Fine Analysis of Electron Spin Resonance Spectra in Organic Transistors", Phys. Rev. Lett. 104, 056602 (2010).
  • S. Horiuchi, Y. Tokunaga, G. Giovannetti, S. Picozzi, H. Itoh, R. Shimano, R. Kumai and Y. Tokura, "Above-room-temperature ferroelectricity in a single-component molecular crystal", Nature 463, 789-792 (11 February 2010).
  • T. Hasegawa, M. Hiraoka, T. Yamada, "Double-shot inkjet printing of donor-acceptor-type organic charge-transfer complexes: Wet/nonwet definition and its use for contact engineering ", Thin Sol. Films 518, 14, 3988 (2010).
  • S. Horiuchi, Y. Tokura, "Croconic acid: An Above-Room-Temperature Organic Ferroelectric of High Polarization", Kotai Butsuri (in Japanese) 45, No.3 149 (2010).
  • S. Horiuchi, R. Kumai, J. Fujioka, Y. Tokura, "Supramolecular approach to organic ferroelectrics", Physica B 405, S334 (2010).
  • T. Yamada, R. Kumai, Y. Takahashi, and T. Hasegawa, "High performance organic thin-film transistors based on hexamethylenetetrathiafulvalene lying flat-on-surface with non-layered packing motif", J. Mater. Chem. 20, 5810-5812 (2010).
  • S. Haas, H. Matsui, and T. Hasegawa, "Field-modulation spectroscopy of pentacene thin films using field-effect devices: Reconsideration of the excitonic structure", Phys. Rev. B 82, 161301(R) (2010).
  • J. Tsutsumi, T. Yamada, H. Matsui, S. Haas, and T. Hasegawa, "Competition between Charge-Transfer Exciton Dissociation and Direct Photocarrier Generation in Molecular Donor-Acceptor Compounds", Phys. Rev. Lett. 105, 226601 (2010).
  • Collaborated Research

  • J. S. Lee, M. Nakamura, D. Okuyama, R. Kumai, T. Arima, M. Kawasaki, and Y. Tokura, "Competing electronic orders in anisotropically strained (Pr0.6Ca0.4)1-x (La0.6Sr0.4)xMnO3 thin films", Phys. Rev. B 82, 052406-1-052406-4(2010).
  • M. Nakamura, D. Okuyama, J. S. Lee, T. Arima, Y. Wakabatashi, R. Kumai, M. Kawasaki, and Y. Tokura, "Magnetically Tunable Metal-Insulator Superlattices", Adv. Mater. 22, 500-504(2010).
  • F. Kagawa, S. Horiuchi, M. Tokunaga, J. Fujioka, and Y. Tokura, "Ferroelectricity in a one-dimensional organic quantum magnet", Nat. Phys. 6, 169 (2010).
  • S. Ishibashi, K. Terakura, S. Horiuchi, "First-principles electronic-structure study for organic ferroelectric tetrathiafulvalene-p-bromanil (TTF-BA)", J. Phys. Soc. Jpn. 79, 043703 (2010).
  • F. Iwase, K. Miyagawa, K. Kanoda, S. Horiuchi, Y. Tokura, "Charge-lattice-coupled quantum fluctuations in DMTTF-2,6-QBr2Cl2", J. Phys. Soc. Jpn. 79, 043709 (2010) (Papers of Editors' Choice) .
  • W. L. Kalb, S. Haas, C. Krellner, T. Mathis, B. Batlogg, "rap density of states in small-molecule organic semiconductors: A quantitative comparison of thin-film transistors with single crystals", Phys. Rev. B 81, 155315 (2010) .
  • M. Kraus, S. Richler, A. Opitz, W. Brutting, S. Haas, T. Hasegawa, A. Hinderhofer, F. Schreiber, "High-mobility copper-phthalocyanine field-effect transistors with tetratetracontane passivation layer and organic metal contacts", J. Appl. Phys. 107, 094503 (2010) .
  • F. Kagawa, S. Horiuchi, H. Matsui, R. Kumai, Y. Onose, T. Hasegawa, Y. Tokura, "Electric-field control of solitons in a ferroelectric organic charge-transfer salt", Phys. Rev. Lett. 104, 227602 (2010) .
  • S.Seki, T.Kurumaji, S.Ishiwata, H.Matsui, H.Murakawa, Y.Tokunaga, Y.Kaneko, T.Hasegawa, Y. Tokura, "Cupric chloride CuCl2 as an S=1/2 chain multiferroic", Phys. Rev. B 82,064424 (2010) .

[2009]

  • Y. Tomioka, R. Kumai, T. Ito, and Y. Tokura, "Magnetic and electronic properties of Eu1-xSrxMnO3 (0.3<x<0.7) single crystals", Phys. Rev. B 80, 174414-1-174414-8(2009).
  • M. Matsubara, Y. Kaneko, J. P. He, H. Okamoto, and Y. Tokura, "Ultrafast polarization and magnetization response of multiferroic GaFeO3 using time-resolved nonlinear optical techniques", Phys. Rev. B 79, 140411(R) (2009).
  • M. Matsubara, Y. Shimada, K. Ohgushi, T. Arima, and Y. Tokura, "Resonant x-ray magnetoelectric effect in a centrosymmetric spinel oxide", Phys. Rev. B 79, 180407(R) (2009).
  • M. Matsubara, Y. Kaneko, J. P. He, H. Okamoto, and Y. Tokura, "Ultrafast polarization and magnetization dynamics in a multiferroic GaFeO3", J. Phys. Conf. Ser. 148, 012015 (2009).
  • M. Matsubara, T. Ogasawara, Y. Tomioka, K. Tobe, H. Okamoto, and Y. Tokura, "A Key for Photoinduced Insulator-Metal Transitions in Manganites: Lattice Constant Matching between Charge/Orbital Ordered Insulator and Ferromagnetic Metal", J. Phys. Soc. Jpn. 78, 023707 (2009).
  • R. Kumai, N. Takeshita, T. Ito, H. Kito, A. Iyo, and H. Eisaki, "Pressure-Induced Modification of Crystal Structure in NdFeAsO1-y (1-y=0.85), Accompanied by Remarkable Suppression of Tc", J. Phys. Soc. Jpn. 78, 013705 (2009).
  • S. Horiuchi, R. Kumai, and Y. Tokura, "Proton-displacive ferroelectricity in neutral cocrystals of anilic acids with phenazine", J. Mater. Chem. 19, 4421-4434 (2009).
  • S. Haas, T. Takahashi, K. Takimiya, T. Hasegawa, "High-performance dinaphtho-thieno-thiophene single crystal field-effect transistors", Appl. Phys. Lett. 95, 022111 (2009).
  • H.Matsui and T.Hasegawa, "Direct Observation of Field-Induced Carrier Dynamics in Pentacene Thin-Film Transistors by ESR Spectroscopy", Jpn. J. Appl. Phys. 48, 04C175 (2009).
  • H.Matsui and T.Hasegawa, "Field-Induced ESR Spectroscopy on Rubrene Single-Crystal Field-Effect Transistors", Mater. Res. Soc. Symp. Proc. 1154, B08-04 (2009).
  • T.Hasegawa and J.Takeya, "Organic field-effect transistors using single crystals", Sci. Technol. Adv. Mater. 10, 024314 (2009).
  • H.Matsui and T.Hasegawa, "Visualization of accumulated charge density in operating organic thin-film transistors", Appl. Phys. Lett. 95, 223301 (2009).
  • M.Hiraoka, T.Yamada and T.Hasegawa, "Bias stress and condensation of mobile trap agents in printed organic transistors", Appl. Phys. Lett. 95, 223304 (2009).
  • Collaborated Research

  • D. Okuyama, M. Nakamura, Y. Wakabayashi, H. Ito, R. Kumai, H. Yamada, Y. Taguchi, T. Arima, M. Kawasaki, and Y. Tokura, "Epitaxial-strain effect on chage/orbital order in Pr0.5Ca0.5MnO3 films", Appl. Phys. Lett. 95, 152502-1-152502-3 (2009).
  • H. Nakamura, H. Tomita, H. Akimoto, R. Matsumura, I. H. Inoue, T. Hasegawa, K. Kono, Y. Tokura, and H. Takagi, "Tuning of Metal-Insulator Transition of Quasi-Two-Dimensional Electrons at Parylene/SrTiO3 Interface by Electric Field", J. Phys. Soc. Jpn 78, No.8, p.083713 (2009).
  • H. Matsuzaki, H. Uemura, M. Matsubara, T. Kimura, Y. Tokura, and H. Okamoto, "Detecting charge and lattice dynamics in photoinduced charge-order melting in perovskite-type manganites using a 30-femtosecond time resolution", Phys. Rev. B 79, 235131 (2009).
  • J. Fujioka, S. Horiuchi, F. Kagawa, and Y. Tokura, "Dynamical disorder of π-molecular structures induced by proton dynamics in an organic ferroelectric compound", Phys. Rev. Lett. 102, 197601 (2009).
  • J. Fujioka, S. Horiuchi, N. Kida, R. Shimano, and Y. Tokura, "Anisotropic polarization-π-molecular-skeleton coupled dynamics in proton-displacive organic ferroelectrics", Phys. Rev. B 80, 125134 (2009).
  • D. Okuyama. Y. Tokunaga, R. Kumai, Y. Taguchi, T. Arima, and Y. Tokura, "Lattice-form-dependent orbital shape and charge disproportionation in charge- and orbital-ordered manganites", Phys. Rev. B 80, 064402-1-064402-8 (2009).
  • T. Akutagawa, H. Koshinaka, D. Sato, S. Takeda, S. Noro, Y. Takahashi, R. Kumai, and Y. Tokura, "Ferroelectricity and polarity control in solid-state flip-flop supramolecular rotators", Nature Mat. 8, 342 - 347 (2009).
  • P.M. Shirage, K. Miyazawa, M. Ishikado, K. Kihou, C.H. Lee, N. Takeshita, H. Matsuhata, R. Kumai, Y. Tomioka, T. Ito, H. Kito, H. Eisaki, S. Shamoto, A. Iyo, "High-pressure synthesis and physical properties of new iron (nickel)-based superconductors", Physica C 469, 355-369 (2009).

[2008]

  • T. Yamada, T. Hasegawa, M. Hiraoka, H. Matsui, Y. Tokura, and G. Saito, "Control of film morphology and its effects on subthreshold characteristics in dibenzotetrathiafulvalene organic thin-film transistors", Appl. Phys. Lett. 92, 233306 (2008).
  • H. Matsui, T. Hasegawa, Y. Tokura, M. Hiraoka, and T. Yamada, "Polaron Motional Narrowing of Electron Spin Resonance in Organic Transistors", Phys. Rev. Lett. 100, 126601 (2008).
  • T. Hasegawa and H. Matsui, "Spectral narrowing of electron spin resonance in organic transistors", Kotai Butsuri (in Japanese) 43, No.6, 351 (2008).
  • S. Horiuchi and Y.Tokura, "Organic Ferroelectrics", Nat. Mater. 7, 357 (2008).
  • M. Matsubara, Y. Okimoto, T. Ogasawara, S. Iwai, Y. Tomioka, H. Okamoto, and Y. Tokura, "Photoinduced switching between charge and orbital ordered insulator and ferromagnetic metal in perovskite manganites", Phys. Rev. B 77, 094410 (2008).
  • M. Matsubara, Y. Okimoto, T. Ogasawara, Y. Tomioka, H. Okamoto, and Y. Tokura, "Ultrafast photoinduced ferromagnetism in the perovskite manganite Gd0.55Sr0.45MnO3", J. Appl. Phys. 103, 07B110 (2008).
  • S. Horiuchi, R. Kumai, Y. Tokunaga, and Y. Tokura, "Proton dynamics and room-temperature ferroelectricity in anilate salts with a proton sponge", J. Am. Chem. Soc. 130, 13382 (2008).
  • Collaborated Research

  • Y. Tokunaga, T. J. Sato, M. Uchida, R. Kumai, Y. Matsui, T. Arima, and Y. Tokura, "Versatile and competing spin-charge-orbital orders in the bilayered manganite system Pr(Sr1?yCay)2Mn2O7", Phys. Rev. B 77, 064428 (2008).
  • M. Konoto, T. Yamada, K. Koike, H. Akoh, T. Arima, and Y. Tokura, "Formation and control of magnetic vortex chirality in patterned micromagnet arrays", J. Appl. Phys. 103, 023904 (2008).
  • F. Iwase, K. Miyagawa, K. Kanoda, S. Horiuchi, and Y. Tokura, "NQR study of neutral-ionic phase transition and quantum paraelectric state in organic charge-transfer complexes", Solid State Sciences 10, 1752 (2008).
  • Y. Kubozono, S. Haas, W. L. Kalb, P. Joris, F. Meng, A. Fujiwara, B.Batlogg, "High-performance C60 thin-film field-effect transistors with parylene gate insulator", Appl. Phys. Lett. 93, 033316 (2008).
  • Y.Krockenberger, H.Matsui, T.Hasegawa, M.Kawasaki, and Y.Tokura, "Solid Phase Epitaxy of Ferrimagnetic Y3Fe5O12 Garnet Thin Films", Appl. Phys. Lett. 93, 092505 (2008).

[2007]

  • M. Hiraoka, T. Hasegawa, T. Yamada, Y. Takahashi, S. Horiuchi, and Y. Tokura, "On-Substrate Synthesis of Molecular Conductor Films and Circuits", Adv. Mater. 19, 3248 (2007).
  • Y. Takahashi, T. Hasegawa, S. Horiuchi, R. Kumai, Y. Tokura, and G. Saito, "High mobility Organic Field-Effect Transistor Based on Hexamethylenetetrathiafulvalene with Organic Metal Electrodes", Chem. Mater. 19, 6382 (2007).
  • S. Horiuchi, R. Kumai, and Y. Tokura, "Organic ferroelectrics using hydrogen-bonded supramolecules", Kotai Butsuri (in Japanese) 42, No.5, 283 (2007).
  • R. Kumai, S. Horiuchi, H. Sagayama, T. Arima, M. Watanabe, Y. Noda, and Y. Tokura, "Structural Assignment of Polarization in Hydrogen-Bonded Supramolecular Ferroelectrics", J. Am. Chem. Soc. 129, 12920 (2007).
  • S. Horiuchi, R.Kumai, and Y.Tokura, "Hydrogen-Bonded Donor-Acceptor Compounds for Organic Ferroelectric Materials", Chem. Commun., 2321 (2007).
  • S. Horiuchi, R. Kumai, and Y. Tokura, "A Supramolecular Ferroelectric Realized by Collective Proton Transfer", Angew. Chem Int. Ed. 46, 3497 (2007).
  • H. Okamoto, H. Matsuzaki, T. Wakabayashi, Y. Takahashi, and T. Hasegawa, "Photoinduced Metallic State Mediated by Spin-Charge Separation in a One-Dimensional Organic Mott Insulator", Phys. Rev. Lett. 98, 037401 (2007).
  • M. Matsubara, Y. Okimoto, T. Ogasawara, Y. Tomioka, H. Okamoto, and Y. Tokura, "Ultrafast Photoinduced Insulator-Ferromagnet Transition in the Perovskite Manganite Gd[sub 0.55]Sr[sub 0.45]MnO[sub 3]", Phys. Rev. Lett. 99, 207401 (2007).
  • S. Tomimoto, M. Matsubara, T. Ogasawara, H. Okamoto, T. Kimura, and Y. Tokura, "Photoinduced Metallic State Mediated by Spin-Charge Separation in a One-Dimensional Organic Mott Insulator ", Phys. Rev. Lett. 98, 017402 (2007).
  • T. Ogasawara, H. Okamoto, Y. Tokura, "Spin dynamics in ferromagnets by femto-second pulse laser irradiation" 、Kotai Butsuri (in Japanese) 42, No.3, 19 (2007).
  • Collaborated Research

  • K. Yonemitsu, N. Maeshima, and T. Hasegawa, "Suppression of Rectification at Metal-Mott Insulator Interfaces", Phys. Rev. B 76, 235118 (2007).
  • M. H. Lemee-Cailleau, E. Collet, M. Buron-Le Cointe, N. Grach, B. Ouladdiaf, F. Moussa, T. Hasegawa, Y. Takahashi, T. Roisnel, and H. Cailleau, "Down to the Quantum Limit at the Neutral-to-Ionic Phase Transition of (BEDT-TTF)(ClMe-TCNQ) - Symmetry Analysis and Phase Diagram", J. Phys. Chem. B 111, 6167 (2007).
  • H. Sakai, K. Ito, R. Kumai, and Y. Tokura, "Fe-Doping Induced Evolution of Charge-Orbital Ordering in a Bicritical-State Manganite", Phys. Rev. B 76, 155112 (2007).
  • S. Miyasaka, T. Yasue, J. Fujioka, Y. Yamasaki, Y. Okimoto, R. Kumai, T. Arima, and Y. Tokura, "Magnetic Field Switching Between the Two Orbital-Ordered States in DyVO3", Phys. Rev. Lett. 99, 217201 (2007).
  • S. Tao, T. Miyagoe, A. Maeda, H. Matsuzaki, H. Ohtsu, M. Hasegawa, S. Takaishi, M. Yamashita, and H. Okamoto, "Ultrafast Optical Switching by using Nanocrystals of a Halogen-Bridged Nickel-Chain Compound Dispersed in an Optical Polymer", Adv. Mater. 19, 2707 (2007).
  • S. Iwai, K. Yamamoto, A. Kashiwazaki, F. Hiramatsu, H. Nakaya, K. Yakushi, H. Okamoto, H. Mori, and Y. Nishio, "Photoinduced Melting of a Stripe-Type Charge-Order and Metallic Domain Formation in a Layered BEDT-TTF-Based Organic Salt", Phys. Rev. Lett. 98, 097402 (2007).
  • Y. Okimoto, H. Matsuzaki, Y. Tomioka, I. Kezsmarki, T. Ogasawara, M.Matsubara, H. Okamoto, and Y. Tokura,"Ultrafast Photoinduced Formation of Metallic State in a Perovskite-type Manganite with Short Range Charge and Orbital Order", J. Phys. Soc. Jpn. 76, 043702 (2007).

[2006]

  • M. Hiraoka, T. Hasegawa, Y. Abe, T. Yamada, Y.Tokura, H. Yamochi, G. Saito, T. Akutagawa, and T. Nakamura, "Inkjet Printing of Organic Metal Electrodes Using Charge-Transfer Compounds", Appl. Phys. Lett. 89, 173504 (2006).
  • Y. Takahashi, T. Hasegawa, Y. Abe, Y. Tokura, and G. Saito, "Organic Metal Electrodes for Controlled P- and N-type Carrier Injections in Organic Field-Effect Transistors", Appl. Phys. Lett. 88, 073504 (2006).
  • R. Kumai, S. Horiuchi, Y. Okimoto, and Y. Tokura, "Large Dielectric Susceptibility Associated with Proton Transfer in a Supramolecular Structure of Chloranilic Acid and 5,5'-dimethyl-2,2'-bipyridine", J. Chem. Phys. 125, 084715 (2006).
  • S. Horiuchi, T.Hasegawa, and Y.Tokura, "Molecular Donor-Acceptor Compounds as Prospective Organic Electronics Materials", J. Phys. Soc. Jpn. 75, 051016 (2006).
  • S. Horiuchi, R. Kumai, Y. Okimoto, and Y. Tokura, "Chemical Approach to Neutral-Ionic Valence Instability, Quantum Phase Transition, and Relaxor Ferroelectricity in Organic Charge-Transfer Complexes", Chem. Phys. 325, 78 (2006).
  • H. Okamoto, K. Ikegami, T. Wakabayashi, Y. Ishige, J. Togo, H. Kishida, and H. Matsuzaki, "Ultrafast Photoinduced Melting of a Spin-Peierls Phase in an Organic Charge-Transfer Compound, K-Tetracyanoquinodimethane", Phys. Rev. Lett. 96, 037405 (2006).
  • S. Iwai, Y. Ishige, S. Tanaka, Y. Okimoto, Y. Tokura, and H. Okamoto, "Coherent Control of Charge and Lattice Dynamics in a Photoinduced Neutral-to-Ionic Transition of a Charge-Transfer Compound", Phys. Rev. Lett. 96, 047503 (2006).
  • S. Iwai and H. Okamoto, "Ultrafast Phase Control in One-Dimensional Correlated Electron Systems ", J. Phys. Soc. Jpn. 75, 11007 (2006).
  • T. Ogasawara, K. Ohgushi, H. Okamoto, and Y.Tokura,"Photoinduced Dynamics of Sublattice Magnetization in Ferrimagnets:FeCr2S4and CoCr2S4" , J. Phys. Soc. Jpn. 75, 083707 (2006).
  • Collaborated Research

  • H. Nakamura, H. Takagi, I. H. Inoue, Y. Takahashi, T. Hasegawa, and Y. Tokura, "Low temperature metallic state induced by electrostatic carrier doping of SrTiO3", Appl. Phys. Lett. 89, 133504 (2006).
  • K. Sakai, T. Hasegawa, M. Ichikawa, and Y. Taniguchi, "Field-effect Characteristics of a One-dimensional Platinum Chain Compound, Bis(1,2-benzoquinonedioximato)platinum(II)", Chem. Lett. 35, 302 (2006).
  • Y. Shimada, S. Miyasaka, R. Kumai, and Y. Tokura, "Semiconducting Ferromagnetic States in La1-xSr1+xCoO4", Phys. Rev. B 73, 134424 (2006).
  • Y. Tokunaga, T. Lottermoser, Y. Lee, R. Kumai, M. Uchida, T. Arima, and Y. Tokura, "Rotation of Orbital Stripes and the Consequent Charge-Polarized State in Bilayer Manganites", Nat. Mater. 5, 937 (2006).
  • M. Uchida, R. Mathieu, J. P. He, Y. Kaneko, A. Asamitsu, R. Kumai, Y. Tomioka, Y. Matsui, and Y. Tokura, "Effect of Quenched Disorder on Charge-Orbital-Spin Ordering in Single-Layer Manganites", J. Phys. Soc. Jpn. 75, 053602 (2006).
  • R. Mathieu, M. Uchida, Y. Kaneko, J. P. He, X. Z. Yu, R. Kumai, T. Arima, Y. Tomioka, A. Asamitsu, Y. Matsui, and Y. Tokura, "Bandwidth-Disorder Phase Diagram of Half-Doped Layered Manganites", Phys, Rev. B. 74, 020404 (2006).
  • A. Maeda, S. Matsumoto, H. Kishida, T. Takenobu, Y. Iwasa, H. Shimoda, O. Zhou, M. Shiraishi, and H. Okamoto, "Gigantic Optical Stark Effect and Ultrafast Relaxation of Excitons in Single-Walled Carbon Nanotubes", J. Phys. Soc. Jpn. 75, 43709 (2006).
  • H. Odaka, Y. Okimoto, T. Yamada, H. Okamoto, M. Kawasaki, and Y. Tokura, "Control of magnetic-field effect on electroluminescence in Alq-based organic light emitting diodes", Appl. Phys. Lett. 88, 123501 (2006).
  • M. Ohtani, H. Kishida. K. Hirota, H. Sakurada, N. Kawamoto, Y. Murakami, K.Ueno, J. Matsuno, Y. Okimoto, T. Makino, Y. Segawa, Y. Tokura, D. Shindo, H.Okamoto, and M. Kawasaki,"Sr2TM O3(TM = Ni,Co) Compounds with 1D TM-O Chains" , Adv. Mater. 18, 2541 (2006).
  • H. Matsuzaki, M. Yamashita and H. Okamoto,"Ultrafast Photoconversion from Charge Density Wave State to Mott-HubbardState in One-Dimensional Extended Peierls-Hubbard System of Br-Bridged Pd Compound" , J. Phys. Soc. Jpn. 75, 123701 (2006).

[2005]

  • Y. Takahashi, T. Hasegawa, Y. Abe, Y. Tokura, K. Nishimura, and G. Saito, "Tuning of Electron Injections for n-type Organic Transistor Based on Charge-Transfer Compounds", Appl. Phys. Lett. 86, 063504 (2005).
  • Y. Abe, T. Hasegawa, Y. Takahashi, T. Yamada, and Y. Tokura, "Control of Threshold Voltage in Pentacene Thin-Film Transistors Using Carrier Doping at the Charge-Transfer Interface with Organic Acceptors", Appl. Phys. Lett. 87, 153506 (2005).
  • T. Hasegawa, R. Kumai, Y. Takahashi, Y. Tokura, and H. Sawa, "Clamp-Type Pressure Cell for Full Structure Determination of Molecular Single Crystals up to 1.5 GPa", Rev. Sci. Instru. 76, 073903 (2005).
  • S. Horiuchi, R. Kumai, and Y. Tokura, "Room-Temperature Ferroelectricity and Gigantic Dielectric Susceptibility on a Supramolecular Architechture of Phenazine and Deuterated Chloranilic Acid", J. Am. Chem. Soc. 127, 5010 (2005).
  • S. Horiuchi, F. Ishii, R. Kumai, Y. Okimoto, H. Tachibana, N. Nagaosa, and Y. Tokura, "Ferroelectricity Near Room Temperature in Co-Crystals of Nonpolar Organic Molecules", Nat. Mater. 4, 163 (2005).
  • Y. Okimoto, R. Kumai, S. Horiuchi, Y. Okamoto, and Y. Tokura, "Quantum Neutral-Ionic Phase Transition as Investigated by Raman Scattering and X-ray Diffraction", J. Phys. Soc. Jpn. 74, 2165 (2005).
  • T. Ogasawara, K. Ohgushi, Y. Tomioka, K. S. Takahashi, H. Okamoto, M. Kawasaki, and Y. Tokura, "General Features of Photoinduced Spin Dynamics in Ferromagnetic and Ferrimagnetic Compounds", Phys. Rev. Lett. 94, 087202 (2005).
  • Collaborated Research

  • R Mathieu, A. Asamitsu, Y. Kaneko, J. P. He, X. Z. Yu, R. Kumai, Y. Onose, N. Takeshita, T. Arima, H. Takagi, and Y. Tokura, "Impurity-Induced Transition to a Mott Insulator in Sr3Ru2O7", Phys. Rev. B 72, 092404 (2005).
  • N. Kida, T. Yamada, M. Konoto, Y. Okimoto, T. Arima, K. Koike, H. Akoh, and Y. Tokura, "Optical Magnetoelectric Effect in a Submicron Patterned Magnet", Phys. Rev. Lett. 94, 77205 (2005).
  • H. Matsuzaki, H. Takamatsu, H. Kishida, and H. Okamoto,"Valence Fluctuation and Domain-Wall Dynamics in Pressure-Induced Neutral-to-Ionic Phase Transition of Organic Charge-Transfer Crystal" , J. Phys. Soc. Jpn. 74, 2925 (2005).
  • Y. Tokura, H. Okamoto, "Photo response of strongly correlated electron systems", Frontiers in Optical Science , J. I. L. S. 192 (2005).

[2004]

  • T. Hasegawa, K. Mattenberger, J. Takeya, and B. Batlogg, "Ambipolar Field-Effect Carrier Injections in Organic Mott Insulators", Phys. Rev. B 69, 245115 (2004).
  • T. Hasegawa, "FET effects in organic Mott transistors", Kotai Butsuri (in Japanese) 39, 153 (2004).
  • Y. Okimoto, R. Kumai, E. Saitoh, M. Izumi, S. Horiuchi, and Y. Tokura, "Spectroscopic Study on Stripe Pattern Formation upon Current Injection in a Charge-Transfer Complex", Phys. Rev. B 70, 115104 (2004).
  • H. Okamoto, Y. Ishige, S. Tanaka, H. Kishida, S. Iwai, and Y. Tokura, "Photoinduced phase transition in tetrathiafulvalene-p-chloranil observed in femtosecond reflection spectroscopy",Phys. Rev. B 70, 165202 (2004).
  • Tomimoto, S. Miyasaka, T. Ogasawara, H. Okamoto, and Y. Tokura,"Photoinduced melting of the orbital order in a perovskite-type vanadate LaVO3" , J. Lumin. 108, 185 (2004).
  • H. Okamoto, S. Iwai and H. Matsuzaki, "Photoinduced phase transitions in one-dimensional correlated electron systems", "Photoinduced phase transitions" ed. by K. Nasu (World Scientific) 239 (2004).
  • Collaborated Research

  • H. Sakamoto, K. Mizoguchi, and T. Hasegawa, "Magnetic properties of (BEDT-TTF)(ClMeTCNQ) studied by ESR under pressure: a neutral-ionic crossover and thermoinduced mesophase", Phys. Rev. Lett. 93, 186401 (2004).
  • Y. Kaneko, T. Arima, J. P. He, R. Kumai, and Y. Tokura, "Magnetic and Crystal Structures of Polar Ferrimagnet Ga2-xFexO3", J. Magn, Magn. Mater. 272, 555 (2004).
  • T. Arima, D. Higashiyama, Y. Kaneko, J. P. He, T. Goto, S. Miyasaka, T. Kimura, K. Oikawa, T. Kamiyama, R. Kumai, and Y. Tokura, "Structural and Magnetoelectric Properties of Ga2-xFexO3 Single Crystals Grown by a Floating-Zone Method", Phys. Rev. B 70, 064426 (2004).
  • D. Akahoshi, Y. Okimoto, M. Kubota, R. Kumai, T. Arima, Y. Tomioka, and Y. Tokura, "Charge-orbital Ordering Nera the Multicritical Point in A-site Ordered Perovskites SmBaMn2O6 and NdBaMn2O6", Phys. Rev. B 70, 064418 (2004).
  • M. Ono, K. Miura, A. Maeda, H. Matsuzaki, H. Kishida, Y. Taguchi, Y. Tokura, M. Yamashita, and H. Okamoto, "Linear and nonlinear optical properties of one-dimensional Mott insulators consisting of Ni-halogen chain and CuO-chain compounds", Phys. Rev. B 70, 085101 (2004).
  • K. Ueno, IH Inoue, T. Yamada, H. Akoh, Y. Tokura, and H. Takagi, "Field-effect transistor based on KTaO perovskite", Appl. Phys. Lett. 84, 3726 (2004).
  • Y. Ishii, H. Sato, A. Sawa, T. Yamada, H. Akoh, K. Endo, M. Kawasaki, and Y. Tokura, "Precipitate-free films of LaSrMnO grown on the substrates with artificial step edges", Appl. Phys. Lett. 85, 3800 (2004).