RESEARCH

発表論文

2019
  • All rock-salt superconductor/ferromagnet heteroepitaxial thin film LaO/EuO
    Kenichi Kaminaga, Daichi Oka, Hirofumi Oka, and Tomoteru Fukumura
    Chem. Lett. 48, 1244-1247 (2019).
    [DOI: xxx]
  • Synthesis and electronic properties of meso-tetra(3,4,5-trimethoxy)phenyl-porphyrin and -tetrabenzoporphyrin and their phosphorus complexestitle
    Taniyuki Furuyama, Yuichi Takahashi, Tomoteru Fukumura, Ana C. C. Bacilla, and Nagao Kobayashi
    J. Polphyrin. Phtalocyanine --, -- (2019).
    [DOI: 10.1142/S1088424619500871]
  • Itinerant ferromagnetism in rocksalt NdO epitaxial thin films
    Daichi Saito, Kenichi Kaminaga, Daichi Oka, and Tomoteru Fukumura
    Phys. Rev. Mater. 3, 064407 (2019).
    [DOI: 10.1103/PhysRevMaterials.3.064407]
  • Interstitialcy diffusion of fluoride ions in LaOF by DFT-based first-principles calculations
    Mayuko Oka, Hideyuki Kamisaka, Tomoteru Fukumura, and Tetsuya Hasegawa
    Comp. Mater. Sci. 167, 92-99 (2019).
    [DOI: 10.1016/j.commatsci.2019.05.028]
  • Synthesis, structural and optical properties of tetrabenzoporphyrin complexes bearing four or eight peripheral phenyl groupstitle
    Taniyuki Furuyama Tetsuo Okujima Kota Muramatsu, Yuichi Takahashi, Akihiro Mikami, Tomoteru Fukumura, Shigeki Mori, Takahiro Nakae, Masayoshi Takase, Hidemitsu Uno, and Nagao Kobayashir
    Euro. J. Org. Chem. 3224-3235 (2019).
    [DOI: 10.1002/ejoc.201900528]
  • High electron mobility with significant spin-orbit coupling in rock-salt YbO epitaxial thin film
    Taku Yamamoto, Kenichi Kaminaga, Daichi Saito, Daichi Oka, and Tomoteru Fukumura
    Appl. Phys. Lett. 14, 162104-1-4 (2019).
    [DOI: 10.1063/1.5085938]
  • Application of X‐ray fluorescence holography to the analysis of the interior and surface of an yttrium oxide thin film
    J. R. Stellhorn, S. Hosokawa, N. Happo, H. Tajiri, T. Matsushita, K. Kaminaga, T. Fukumura, T. Hasegawa, K. Kimura, K. Hayashi
    Surf. Interface Anal. 51, 70-73 (2019).
    [DOI: 10.1002/sia.6550]
2018
  • Two distinct surface terminations of SrVO3 (001) ultrathin films as an influential factor on metallicity
    H. Oka, Y. Okada, T. Hitosugi, and T. Fukumura
    Appl. Phys. Lett. 113, 171601 (2018).
    [DOI: 10.1021/acsomega.8b02082]
  • New Lutetium Oxide: Electrically Conducting Rock-Salt LuO Epitaxial Thin Film
    K. Kaminaga, D. Oka, T. Hasegawa, and T. Fukumura
    ACS Omega 3, 12501 (2018).
    [DOI: 10.1021/acsomega.8b02082]
  • Anion-Substitution-Induced Non-Rigid Variation of Band Structure in SrNbO3-xNx (0 ≤ x ≤ 1) Epitaxial Thin Films
    D. Oka, Y. Hirose, M. Kaneko, S. Nakao, T. Fukumura, K. Yamashita, and T. Hasegawa
    ACS Appl. Mater. Interfaces 10, 35008 (2018).
    [DOI: 10.1021/acsami.8b08577]
  • Superconductivity in anti-ThCr2Si2 type Er2O2Bi induced by incorporation of excess oxygen with CaO oxidant
    K. Terakado, R, Sei, H. Kawasoko, T. Koretsune, D. Oka, T. Hasegawa, and T. Fukumura
    Inorg. Chem. 57, 10587 (2018).
    [DOI: 10.1021/acs.inorgchem.8b01199]
  • Density functional theory-based ab initio molecular dynamics simulation of ionic conduction in N-/F-doped ZrO2 under epitaxial strain
    M. Oka, H. Kamisaka, T. Fukumura, and T. Hasegawa
    Comp. Mater. Sci. 154, 91 (2018).
    [DOI: 10.1016/j.commatsci.2018.07.038]
  • Superconductivity of Rock-Salt Structure LaO Epitaxial Thin Film
    K. Kaminaga, D. Oka, T. Hasegawa, and T. Fukumura
    J. Am. Chem. Soc. 140, 6754 (2018).
    [DOI: 10.1021/jacs.8b03009]
2017
  • A valence-selective X-ray fluorescence holography study of an yttrium oxide thin film
    J. R. Stellhorn, S. Hosokawa, N. Happo, H. Tajiri, T. Matsushita, K. Kaminaga, T. Fukumura, T. Hasegawa, and K. Hayashi
    J. Appl. Cryst. 50, 1583 (2017).
    [DOI: 10.1107/S1600576717012821]
  • Magnetic and magnetotransport properties of ThCr2Si2-type Ce2O2Bi composed of conducting Bi2- square net and magnetic Ce-O layer
    S. Shibata, R. Sei, T. Fukumura, and T. Hasegawa
    Appl. Phys. Lett. 110, 192410 (2017).
    [DOI: 10.1063/1.4983280]
  • Strain Engineering for Anion Arrangement in Perovskite Oxynitrides
    D. Oka , Y. Hirose, F. Matsui, H. Kamisaka, T. Oguchi, N. Maejima, H. Nishikawa, T. Muro, K. Hayashi, and T. Hasegawa
    ACS Nano 11, 3860 (2017).
    [DOI: 10.1021/acsnano.7b00144]
  • The Recovery of a Magnetically Dead Layer on the Surface of an Anatase (Ti,Co)O2 Thin Film via an Ultrathin TiO2 Capping Layer
    T. S. Krasienapibal, T. Fukumura, and T. Hasegawa
    Electronics 6, 23 (2017).
    [DOI: 10.3390/electronics6010023]
  • Samarium monoxide epitaxial thin film as a possible heavy-fermion compound
    Y. Uchida, K. Kaminaga, T. Fukumura, and T. Hasegawa
    Phys. Rev. B 95, 125111 (2017).
    [DOI: 10.1103/PhysRevB.95.125111]
  • Crystal engineering for novel functionalities with oxide thin film epitaxy
    D. Oka and T. Fukumura
    CrystEngComm 19, 2124 (2017).
    [DOI: 10.1039/C7CE00322F]
  • Topotactic fluorination of perovskite strontium ruthenate thin films using polyvinylidene fluoride
    K. Kawahara, A. Chikamatsu, T. Katayama, T. Onozuka, D. Ogawa, K. Morikawa, E. Ikenaga, Y. Hirose, I. Harayama, D. Sekiba, T. Fukumura and T. Hasegawa
    CrystEngComm 19, 313 (2017).
    [DOI: 10.1039/C6CE02358D]
2016
  • Two Dimensional Superconductivity Emerged at Monatomic Bi2- Square Net in Layered Y2O2Bi via Oxygen Incorporation
    Ryosuke Sei, Suguru Kitani, Tomoteru Fukumura, Hitoshi Kawaji, and Tetsuya Hasegawa
    J. Am. Chem. Soc. 138, 11085 (2016)
    [DOI: 10.1021/jacs.6b05275]
  • Formation of defect-fluorite structured NdNiOxHy epitaxial thin films via a soft chemical route from NdNiO3 precursors
    T. Onozuka, A. Chikamatsu, T. Katayama, T. Fukumura and T. Hasegawa
    Dalton Trans. 45, 12114 (2016).
    [DOI: 10.1039/C6DT01737A]
  • A divalent rare earth oxide semiconductor: Yttrium monoxide
    Kenichi Kaminaga, Ryosuke Sei, Kouichi Hayashi, Naohisa Happo, Hiroo Tajiri, Daichi Oka, Tomoteru Fukumura and Tetsuya Hasegawaa
    Appl. Phys. Lett. 108, 122102-1-4 (2016).
    [DOI: 10.1063/1.4944330] (Editor's Pick)
  • Topotactic reductive synthesis of A-site cation-ordered perovskite YBaCo2Ox (x = 4.5–5.5) epitaxial thin films
    Tsukasa Katayama, Akira Chikamatsu, Tomoteru Fukumura and Tetsuya Hasegawa
    Jpn. J. Appl. Phys 55, 04EJ05-1-4 (2016).
    [DOI: 10.7567/JJAP.55.04EJ05]
  • Curie temperature of Co-doped TiO2 as functions of carrier density and Co content evaluated from electrical transport and magnetization at low temperature regime
    Thantip S. Krasienapibal, Tomoteru Fukumura and Tetsuya Hasegawa
    AIP Advances 6, 055802-1-5 (2016).
    [DOI: 10.1063/1.4942554]
2015
  • Composition-induced structural, electrical, and magnetic phase transitions in AX-type mixed-valence cobalt oxynitride epitaxial thin films
    Jumpei Takahashi, Yasushi Hirose, Daichi Oka, Shoichiro Nakao, Chang Yang, Tomoteru Fukumura, Isao Harayama, Daiichiro Sekiba and Tetsuya Hasegawa
    Appl. Phys. Lett. 107, 231906-1-5 (2015).
    [DOI: 10.1063/1.4937431]
  • 2D Electronic Transport with Strong Spin–Orbit Coupling in Bi2- Square Net of Y2O2Bi Thin Film Grown by Multilayer Solid-Phase Epitaxy
    Ryosuke Sei, Tomoteru Fukumura, and Tetsuya Hasegawa
    ACS Appl. Mater. Interfaces 7, 24998-25001 (2015).
    [DOI: 10.1021/acsami.5b07825]
  • Intrinsic high electrical conductivity of stoichiometric SrNbO3 epitaxial thin films
    Daichi Oka, Yasushi Hirose, Shoichiro Nakao, Tomoteru Fukumura, and Tetsuya Hasegawa
    Phys. Rev. B 92, 205102-1-5 (2015).
    [DOI: 10.1103/PhysRevB.92.205102]
  • Topotactic synthesis of strontium cobalt oxyhydride thin film with perovskite structure
    Tsukasa Katayama, Akira Chikamatsu, Hideyuki Kamisaka, Yuichi Yokoyama, Yasuyuki Hirata, Hiroki Wadati, Tomoteru Fukumura and Tetsuya Hasegawa
    AIP Advances 5, 107147-1-7 (2015).
    [DOI: 10.1063/1.4935190]
  • Effects of Cr substitution on the magnetic and transport properties and electronic states of SrRuO3 epitaxial thin films
    Kaori Kurita, Akira Chikamatsu, Kei Shigematsu, Tsukasa Katayama, Hiroshi Kumigashira, Tomoteru Fukumura, and Tetsuya Hasegawa
    Phys. Rev. B 92, 115153-1-6 (2015).
    [DOI: 10.1103/PhysRevB.92.115153]
  • DFT-based ab initio MD simulation of the ionic conduction in doped ZrO2 systems under epitaxial strain
    Mayuko Oka, Hideyuki Kamisaka, Tomoteru Fukumura, and Tetsuya Hasegawa
    Phys. Chem. Chem. Phys. 17, 29057-29063 (2015).
    [DOI: 10.1039/C5CP03238E]
  • Low temperature epitaxial growth of anatase TaON using anatase TiO2 seed layer
    Atsushi Suzuki, Yasushi Hirose, Daichi Oka, Shoichiro Nakao, Tomoteru Fukumura and Tetsuya Hasegawa
    Jpn. J. Appl. Phys. 54, 080303-1-3 (2015).
    [DOI: 10.7567/JJAP.54.080303]
  • Spontaneous formation of suboxidic coordination around Co in ferromagnetic rutile Ti0.95Co0.05O2 film
    Wen Hu, Kouichi Hayashi, Tomoteru Fukumura, Kazuto Akagi, Masaru Tsukada, Naohisa Happo, Shinya Hosokawa, Kenji Ohwada, Masamitu Takahasi, Motohiro Suzuki and Masashi Kawasaki
    Appl. Phys. Lett. 106, 222403-1-5 (2015).
    [DOI: 10.1063/1.4921847]
  • Observation of magnetic domain structure in anatase (Ti,Co)O2 thin film at room temperature
    Thantip S. Krasienapibal, Shun Inoue, Tomoteru Fukumura and Tetsuya Hasegawa
    Appl. Phys. Lett. 106, 202402-1-4 (2015).
    [DOI: 10.1063/1.4921464.]
  • Effect of Central Metals on Langmuir-Blodgett Monolayers of Phthalocyanines with Flexible Substituents
    Shungo Kojima, Tomoteru Fukumura and Tetsuya Hasegawa
    e-J. Surf. Sci. Nanotech. 13, 155-158 (2015).
    [DOI: 10.1380/ejssnt.2015.155]
  • Epitaxial Strain-Controlled Ionic Conductivity in Li-Ion Solid Electrolyte Li0.33La0.56TiO3 Thin Films
    Jie Wei, Daisuke Ogawa, Tomoteru Fukumura, Yasushi Hirose, and Tetsuya Hasegawa
    Cryst. Growth Des. 15, 2187-2191 (2015).
    [DOI: 10.1021/cg501834s]
  • Topotactic reductive fluorination of strontium cobalt oxide epitaxial thin films
    Tsukasa Katayama, Akira Chikamatsu, Yasushi Hirose, Tomoteru Fukumura, and Tetsuya Hasegawa
    J. Sol-Gel Sci. Technol. 73, 527-530 (2015).
    [DOI: 10.1007/s10971-014-3499-x]
2014
  • Reductive solid phase epitaxy of layered Y2O2Bi with Bi2- square net from (Y, Bi) powders and Y2O3 amorphous thin film
    Ryosuke Sei, Tomoteru Fukumura and T. Hasegawa
    Cryst. Growth Des. 14, 4227-4229 (2014).
    [DOI: 10.1021/cg5009297]
  • Metallic transport and large anomalous Hall effect at room temperature in ferrimagnetic Mn4N epitaxial thin film
    Xi Shen, Akira Chikamatsu, Kei Shigematsu, Yasushi Hirose, Tomoteru Fukumura and Tetsuya Hasegawa
    Appl. Phys. Lett. 105, 072410-1-3 (2014).
    [DOI: 10.1063/1.4893732]
  • Improved room temperature electron mobility in self-buffered anatase TiO2 epitaxial thin film grown at low temperature
    Thantip S. Krasienapibal, Tomoteru Fukumura, Yasushi Hirose and Tetsuya Hasegawa
    Jpn. J. Appl. Phys. 53, 090305-1-3 (2014). (selected as Spotlights paper)
    [DOI: 10.7567/JJAP.53.090305]
  • Sr2MgMoO6-δ thin films fabricated using pulsed-laser deposition with high concentrations of oxygen vacancies
    Kei Shigematsu, Akira Chikamatsu, Tomoteru Fukumura, Satoshi Toyoda, Eiji Ikenaga and Tetsuya Hasegawa
    Appl. Phys. Lett. 104, 261901-1-4 (2014).
    [DOI: 10.1063/1.4886136]
  • Topotactic fluorination of strontium iron oxide thin films using polyvinylidene fluoride
    Tsukasa Katayama, Akira Chikamatsu, Yasushi Hirose, Ryosuke Takagi, Hideyuki Kamisaka, Tomoteru Fukumura and Tetsuya Hasegawa
    J. Mater. Chem. C 2, 5350-5356 (2014).
    [DOI: 10.1007/s10971-014-3499-x]
  • Possible ferroelectricity in perovskite oxynitride SrTaO2N epitaxial thin films
    Daichi Oka, Yasushi Hirose, Hideyuki Kamisaka, Tomoteru Fukumura, Kimikazu Sasa, Satoshi Ishii, Hiroyuki Matsuzaki, Yukio Sato, Yuichi Ikuhara and Tetsuya Hasegawa
    Sci. Rep. 4, 4987-1-6 (2014).
    [DOI: 10.1038/srep04987]
  • Carrier generation mechanism and effect of tantalum-doping in transparent conductive amorphous SnO2 thin films
    Shoishiro Nakao, Yasushi Hirose, Tomoteru Fukumura and Tetsuya Hasegawa
    Jpn. J. Appl. Phys. 53, 05FX04-1-4 (2014).
    [DOI: 10.7567/JJAP.53.05FX04]
  • Metallic conductivity in infinite-layer strontium iron oxide thin films reduced by calcium hydride
    Tsukasa Katayama, Akira Chikamatsu, Yasushi Hirose, Hiroshi Kumigashira, Tomoteru Fukumura and Tetsuya Hasegawa
    J. Phys. D: Appl. Phys. 47, 135304-1-6 (2014).
    [DOI: 10.1088/0022-3727/47/13/135304]
  • Fabrication and properties of micro capacitors with a one-nanometer-thick single Ti0.87O2 nanosheet
    Daisuke Ogawa, Kosho Akatsuka, Tomoteru Fukumura, Minoru Osada, Takayoshi Sasaki, and Tetsuya Hasegawa
    Chem. Lett. 43, 307-309 (2014).
    [DOI: 10.1246/cl.130925]
  • High-mobility electron conduction in oxynitride: anatase TaON
    Atsushi Suzuki, Yasushi Hirose, Daichi Oka, Shoichiro Nakao, Tomoteru Fukumura, Satoshi Ishii, Kimikazu Sasa, Hideyuki Matsuzaki and Tetsuya Hasegawa
    Chem. Mater. 26, 976-981 (2014).
    [DOI: 10.1021/cm402720d]
  • Quantum confinement effect in Bi anti-dot thin films with tailored pore wall widths and thicknesses
    Youngok Park, Yasushi Hirose, Shoichiro Nakao, Tomoteru Fukumura, Jimmy Xu and Tetsuya Hasegawa
    Appl. Phys. Lett. 104, 023106-1-4 (2014).
    [DOI: 10.1063/1.4861775]
  • Heteroepitaxial growth of perovskite CaTaO2N thin films by nitrogen plasma-assisted pulsed laser deposition
    Daichi Oka, Yasushi Hirose, Tomoteru Fukumura, and Tetsuya Hasegawa
    Cryst. Growth Des. 14, 87-90 (2014).
    [DOI: 10.1021/cg401176j]
2013
  • Solid phase epitaxy of EuTiO3 thin films on SrTiO3 (100) substrates with different oxygen contents
    K. Shimamoto, Y. Hirosea, S. Nakaob, T. Fukumura, T. Hasegawa
    J. Cryst. Growth 378, 243-245 (2013).
    [DOI:10.1016/j.jcrysgro.2012.12.117]
  • Electronic and transport properties of Eu-substituted infinite-layer strontium ferrite thin films
    A. Chikamatsu, T. Matsuyama, T. Katayama, Y. Hirose, H. Kumigashira, M. Oshima, T. Fukukmura, T. Hasegawa
    J. Cryst. Growth 378, 165-167 (2015).
    [DOI:10.1016/j.jcrysgro.2012.12.067]
  • Room temperature ferromagnetism induced by electric field in cobalt-doped TiO2
    T. Fukumura, Y. Yamada, K. Ueno, H. T. Yuan, H. Shimotani, Y. Iwasa, L. Gu, S. Tsukimoto, Y. Ikuhara, M. Kawasaki
    “ECS Transactions - Honolulu, Hawaii” Volume 50, pp. 53-57 (2013) "Dielectric Materials and Metals for Nanoelectronics and Photonics 10", from the Honolulu, HI meeting. (reviewed)
  • Electron carrier-mediated room temperature ferromagnetism in anatase (Ti,Co)O2
    T. Fukumura, Y. Yamada, K. Ueno, H. T. Yuan, H. Shimotani, Y. Iwasa, L. Gu, S. Tsukimoto, Y. Ikuhara, M. Kawasaki
    Spin 2, 1230005-1-10 (2012).
    [DOI:10.1142/S2010324712300058]
  • Full compensation of oxygen vacancies in EuTiO3 (100) epitaxial thin film stabilized by a SrTiO3 surface protection layer
    K. Shimamoto, K. Hatabayashi, Y. Hirose, S. Nakao, T. Fukumura, T. Hasegawa
    Appl. Phys. Lett. 102, 042902-1-4 (2013).
    [DOI:10.1063/1.4789778]
2012
  • Ultrafast optical control of magnetization in EuO thin films
    F. Liu, T. Makino, T. Yamazaki, K. Ueno, A. Tsukazaki, T. Fukumura, Y. Kong, M. Kawasaki
    Phys. Rev. B 86,064403-1-5 (2012).
    [DOI:10.1103/PhysRevB.86.064403.]
  • Ultrafast time-resolved Faraday rotation in EuO thin films
    F. Liu, T. Makino T. Yamazaki, K. Ueno, A. Tsukazaki, T. Fukumura, Y. Kong, M. Kawasaki
    Phys. Rev. Lett. 108,257401-1-5 (2012).
    [DOI:10.1103/PhysRevLett.108.257401. ]
  • Ferromagnetism of cobalt-doped anatase TiO2 studied by bulk- and surface-sensitive soft x-ray magnetic circular dichroism
    V. R. Singh, K. Ishigami, V. K. Verma, G. Shibata, Y. Yamazaki, T. Kataoka, A. Fujimori, F.-H. Chang, D.-J. Huang, H.-J. Lin, C. T. Chen, Y. Yamada, T. Fukumura, M. Kawasaki
    Appl. Phys. Lett. 100,242404-1-5 (2012).
    [DOI:10.1063/1.4729123. ]
  • Magnetic and dielectric properties of layered perovskite Gd2Ti2O7 thin film epitaxially stabilized on a perovskite single crystal
    T. Ukita, Y. Hirose, S. Ohno, K. Hatabayashi, T. Fukumura, T. Hasegawa
    J. Appl. Phys. 111,07D909-1-3 (2012).
    [DOI: 10.1063/1.3673546. ]
  • Enhanced coercivity of half-metallic La0.7Sr0.3MnO3 by Ru substitution under in-plane uniaxial strain
    K. Shigematsu, A. Chikamatsu, Y. Hirose, T. Fukumura, T. Hasegawa
    J. Appl. Phys. 111,07B102-1-3 (2012).
    [DOI: 10.1063/1.3672852. ]
2011
  • Control of ferromagnetism at room temperature in (Ti,Co)O2-δ via chemical doping of electron carriers
    Y. Yamada, T. Fukumura, K. Ueno and M. Kawasaki
    Appl. Phys. Lett. 99, 242502-1-3 (2011).
    [DOI:10.1063/1.3669505]
  • Electronic structure of delafossite-type CuMO2 (M = Sc, Cr, Mn, Fe and Co): Optical absorption measurements and first-principles calculations
    H. Hiraga, T. Makino, T. Fukumura, H. M. Weng and M. Kawasaki
    Phys. Rev. B 84, 041411(R)-1-4 (2011).
    [DOI:10.1103/PhysRevB.84.041411]
  • Electrically-induced ferromagnetism at room temperature in cobalt-doped titanium dioxide
    Y. Yamada, K. Ueno, T. Fukumura, H. T. Yuan, H. Shimotani, Y. Iwasa, L. Gu, S. Tsukimoto, Y. Ikuhara, and M. Kawasaki
    Science 332, 1065-1067 (2011).
    [DOI:10.1126/science.1202152]
  • Bulk and surface magnetization of Co atoms in rutile Ti1-xCoOxO2-δ thin film revealed by X-ray magnetic circular dichroism
    V. R. Singth, Y. Sakamoto, T. Kataoka, M. Kobayashi, Y. Yamazaki, A. Fujimori, F. H. Chang, D. J. Huang, H. J. Lin, C. T. Chen, H. Toyosaki, T. Fukumura and M. Kawasaki
    J. Phys.: Condens. Matter 23, 176001-1-5 (2011).
    [DOI:10.1088/0953-8984/23/17/176001]
  • Observation of anomalous Hall effect in EuO epitaxial thin film grown by pulse laser deposition method
    T. Yamasaki, K. Ueno, A. Tsukazaki, T. Fukumura and M. Kawasaki
    Appl. Phys. Lett. 98, 082116-1-3 (2011).
    [DOI:10.1063/1.3557050]
  • Carrier doping into SrFeO2 epitaxial thin films by Eu-substitution
    T. Matsuyama, A. Chikamatsu, Y. Hirose, T. Fukumura and T. Hasegawa
    Appl. Phys. Express 4, 013001-1-3 (2011).
    [DOI:10.1143/APEX.4.013001]
2010
  • High throughput screening of magneto-optical properties in spinel ferrite (Zn,Co)Fe2O4 solid solution epitaxial film with a composition-spread approach
    Yosuke Iwasaki, Tomoteru Fukumura, Hisamichi Kimura, Akira Ohkubo, Tetsuya Hasegawa, Yasushi Hirose, Takayuki Makino, Kazunori Ueno and Masashi Kawasaki
    Appl. Phys. Express 3, 103001-1-3 (2010).
    [DOI: 10.1143/APEX.3.103001]
  • Ultrafast dynamics of excitons in delafossite CuScO2 thin films
    Fucai Liu, Takayuki Makino, Hiroki Hiraga, Tomoteru Fukumura, Yongfa Kong and Masashi Kawasaki
    Appl. Phys. Lett. 96, 211904-1-3 (2010).
    [DOI: 10.1063/1.3436548]
  • Electric field control of two-dimensional electrons in polymer-gated oxide semiconductor heterostructures
    Masaki Nakano, Atsushi Tsukazaki, Akira Ohtomo, Kazunori Ueno, Shunsuke Akasaka, Hiroyuki Yuji, Ken Nakahara, Tomoteru Fukumura and Masashi Kawasaki
    Adv. Mater. 22, 876-879 (2010).
    [DOI: 10.1002/adma.200902162]
  • Spatial distribution of two-dimensional electron gas in a ZnO/Mg0.2Zn0.8O heterostructure probed with a conducting polymer Schottky contact
    Masaki Nakano, Atsushi Tsukazaki, Kazunori Ueno, Ryo-Yu Gunji, Akira Ohtomo, Tomoteru Fukumura and Masashi Kawasaki
    Appl. Phys. Lett. 96, 052116-1-3 (2010).
    [DOI: 10.1021/cg501834s]
  • Interplay between magnetic impurities and photo-induced carriers in surface depletion layer of anatase Ti1-xCoxO2-δ thin film probed by x-ray photoemission spectroscopy
    N. Yamashita, S. Sudayama, T. Mizokawa, Y. Yamada, T. Fukumura, M. Kawasaki
    Appl. Phys. Lett. 96, 021907-1-3 (2010).
    [DOI: 10.1063/1.3291680]