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Publication List

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007


2020

  • "Effect of Anisotropy in Rutile TiO2 on the Performance of Solid-State Lithium Batteries"

    Daisuke Imazeki, Christopher Cornelis van Gils, Kazunori Nishio, Ryota Shimizu, and Taro Hitosugi
    ACS Appl. Energy Mater., in press.

  • "Polarity reversal of the charge carrier in tetragonal TiHx (x = 1.6-2.0) at low temperatures"

    Ryota Shimizu, Yuki Sasahara, Ikutaro Hamada, Hiroyuki Oguchi, Shohei Ogura, Tetsuroh Shirasawa, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Shin-ichi Orimo, Katsuyuki Fukutani, and Taro Hitosugi
    Phys. Rev. Research, in press.

  • "Width-induced metal-insulator transition in SrVO3 lateral nanowires spontaneously formed on the ultrathin film"

    Hirofumi Oka, Yoshinori Okada, Kenichi Kaminaga, Daichi Oka, Taro Hitosugi, and Tomoteru Fukumura
    Appl. Phys. Lett., 117, 051603 (2020)

  • "Epitaxial Thin Film Growth of Europium Dihydride"

    Yuya Komatsu, Ryota Shimizu, Markus Wilde, Shigeru Kobayashi, Yuki Sasahara, Kazunori Nishio, Kei Shigematsu, Akira Ohtomo, Katsuyuki Fukutani, and Taro Hitosugi
    Cryst. Growth Des., 20, 5903 (2020)

  • "The impact of surface roughness on recrystallization of α-Al2O3(001) single crystal to α-AlO(OH) diaspore microcrystals"

    Yuki Sasahara, Koki Kanatani, Masayuki Matsuhisa, Yuji Wada, Ryota Shimizu, Norimasa Nishiyama, and Taro Hitosugi
    ACS Omega, in press.

  • "Diffusion of F atoms from fluoride substrates promotes the epitaxial growth of metal fluorides"

    Xin Dai, Yuya Komatsu, Ryota Shimizu, and Taro Hitosugi
    Appl. Phys. Express, 13, 085507 (2020)

    Selected for "Spotlights"

  • "Impact of the Crystal Orientation of Positive Electrodes on the Interface Resistance Across a Solid Electrolyte and Electrode"

    Kazunori Nishio, Naoto Nakamura, Koji Horiba, Miho Kitamura, Hiroshi Kumigashira, Ryota Shimizu, and Taro Hitosugi
    ACS Appl. Energy Mater., 3, 6416 (2020)

  • "Interfacial superconductivity in FeSe ultrathin films on SrTiO3 probed by in situ independently driven four-point-probe measurements"

    Asger K. Pedersen, Satoru Ichinokura, Tomoaki Tanaka, Ryota Shimizu, Taro Hitosugi, and Toru Hirahara
    Phys. Rev. Lett., 124, 227002 (2020)

    Press release

  • "Superconducting dome revealed by surface structure dependence in single unit cell FeSe on SrTiO3 (001)"

    Tomoaki Tanaka, Kenta Akiyama, Satoru Ichinokura, Ryota Shimizu, Taro Hitosugi, and Toru Hirahara
    Phys. Rev. B, 101, 205421 (2020)

  • "Bayesian statistics-based analysis of AC impedance spectra"

    Yu Miyazaki, Ryo Nakayama, Nobuaki Yasuo, Yuki Watanabe, Ryota Shimizu, Daniel M. Packwood, Kazunori Nishio, Yasunobu Ando, Masakazu Sekijima, and Taro Hitosugi
    AIP Advances, 10, 045231 (2020)

  • "Metal Hydrides: Epitaxial Growth and Electronic Properties"

    Ryota Shimizu, Hiroyuki Oguchi, and Taro Hitosugi
    J. Phys. Soc. Jpn., 89, 051012 (2020)

    Highlight
  • "Visible-light-driven photocatalysis via reductant-to-band charge transfer in Cr(III) nanocluster-loaded SrTiO3 system"

    Aufandra Cakra Wardhana, Akira Yamaguchi, Shusaku Shoji, Min Liu, Takeshi Fujita, Taro Hitosugi, and Masahiro Miyauchi
    Appl. Catal. B, 270, 118883 (2020)

  • "Hole Accumulation at the Grain Boundary Enhances Water Oxidation at α-Fe2O3 Electrodes under Microwave Electric Field"

    Masayuki Matsuhisa, Shuntaro Tsubaki, Fuminao Kishimoto, Satoshi Fujii, Iku Hirano, Masahiro Horibe, Eiichi Suzuki, Ryota Shimizu, Taro Hitosugi, and Yuji Wada
    J. Phys. Chem. C, 124, 7749 (2020)

    Press release

  • "Ultrahigh-pressure fabrication of single-phase α-PbO2-type TiO2 epitaxial thin films"

    Yuki Sasahara, Koki Kanatani, Hiroaki Asoma, Masayuki Matsuhisa, Kazunori Nishio, Ryota Shimizu, Norimasa Nishiyama, and Taro Hitosugi
    AIP Advances, 10, 025125 (2020)

  • "Low interface resistance in solid-state lithium batteries using spinel LiNi0.5Mn1.5O4(111) epitaxial thin films"

    Hideyuki Kawasoko, Tetsuroh Shirasawa, Susumu Shiraki, Toru Suzuki, Shigeru Kobayashi, Kazunori Nishio, Ryota Shimizu, and Taro Hitosugi
    ACS Appl. Energy Mater., 3, 1358 (2020)

  • "Origin of optical transparency in a transparent superconductor LiTi2O4"

    Takeo Ohsawa, Naoomi Yamada, Akichika Kumatani, Yoshitaka Takagi, Tohru Suzuki, Ryota Shimizu, Susumu Shiraki, Tsutomu Nojima, and Taro Hitosugi
    ACS Appl. Electron. Mater, 2, 517 (2020)

  • "Low resistance at LiNi1/3Mn1/3Co1/3O2 and Li3PO4 interfaces"

    Kazunori Nishio, Naoto Nakamura, Koji Horiba, Miho Kitamura, Hiroshi Kumigashira, Ryota Shimizu, and Taro Hitosugi
    Appl. Phys. Lett., 116, 053901 (2020)

  • "Metallic Band Structure of CaF2 Thin Films Grown on Silicon(111): Possible formation of CaSi2"

    Yuzuru Takahashi, Satoru Ichinokura, Ryota Shimizu, Susumu Shiraki, Taro Hitosugi, and Toru Hirahara
    Appl. Surf. Sci., 509, 144687 (2020)

2019

2018

  • "Atomically Well-Ordered Structure at Solid Electrolyte and Electrode Interface Reduces the Interfacial Resistance"

    Shiraki Susumu, Shirasawa Tetsuroh, Suzuki Tohru, Kawasoko Hideyuki, Shimizu Ryota, and Hitosugi Taro
    ACS Appl. Mater. Interfaces, 10, 41732 (2018)
    Press release

  • "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)

  • "Impact of a surface TiO2 atomic sheet on the electronic transport properties of LaAlO3/SrTiO3 heterointerfaces"

    T. Ohsawa, M. Saito, R. Shimizu, K. Iwaya, S. Shiraki, Y. Ikuhara, and T. Hitosugi
    Appl. Phys. Lett. 113, 141602 (2018)

  • "Pulsed laser deposition of oxide thin films by the fifth harmonic of a Nd:Y3Al5O12(Nd:YAG) laser"

    Ryota Shimizu, Issei Sugiyama, Naoto Nakamura, Shigeru Kobayashi, and Taro Hitosugi
    AIP Advances, 8, 095101 (2018)

  • "Extremely low resistance of Li3PO4 electrolyte/Li(Ni0.5Mn1.5)O4 electrode interfaces"

    Hideyuki Kawasoko, Susumu Shiraki, Toru Suzuki, Ryota Shimizu, and Taro Hitosugi
    ACS Appl. Mater. Interfaces, 10, 32, 27498 (2018)
    Press release
    日経産業新聞
    化学工業日報

  • "Material informatics for self-assembly of functionalized organic precursors on metal surfaces"

    Daniel M. Packwood and Taro Hitosugi
    Nat. Commun., 9, 2469 (2018)

    Press release

  • "Anisotropic band splitting in monolayer NbSe2 : implications for superconductivity and charge density wave"

    Yuki Nakata, Katsuaki Sugawara, Satoru Ichinokura, Yoshinori Okada, Taro Hitosugi, Takashi Koretsune, Keiji Ueno, Shuji Hasegawa, Takashi Takahashi, and Takafumi Sato
    npj 2D Materials and Applications, 2, 12 (2018)

  • "TiO2/TNO homojunction introduced in a dye-sensitized solar cell with a novel TNO transparent conductive oxide film"

    Masayuki Okuya, Jun Sato, Takeshi Endo, Ryo Iwaki, Shuichiro Takemura, Ryosuke Muramoto, Viola Nagygyorgy, Janos Madarasz, Shoichiro Nakao, Naoomi Yamada, Enju Sakai, Taro Hitosugi, and Tetsuya Hasegawa
    J. Am. Ceram. Soc., 101, 5071 (2018)

  • [Proceedings] "LE-μ+SR Study of Superconductivity in the Thin Film Battery Material LiTi2O4"

    M. Mansson, O.K. Forslund, H. Nozaki, I. Umegaki, S. Shiraki, T. Hitosugi, T. Prokscha, Z. Salman, A. Suter, Y. Sassa, and J. Sugiyama
    JPS Conf. Proc., 21, 011025 (2018)

  • [Proceedings] "Challenge for Detecting the Interface between Electrode and Electrolyte with β-NMR"

    Jun Sugiyama, Izumi Umegaki, Susumu Shiraki, Taro Hitosugi, Ryan M. L. McFadden, Dongsheng Wang, Victoria Karner, Gerald D. Morris, W. Andrew MacFarlane, and Robert F. Kiefl
    JPS Conf. Proc., 21, 011021 (2018)

  • [Proceedings] "Li-Diffusion in Spinel Li[Ni1/2Mn3/2]O4 Powder and Film Studied with μ+SR"

    Jun Sugiyama, Hiroshi Nozaki, Izumi Umegaki, Kazuhiko Mukai, Stephen P. Cottrell, Susumu Shiraki, Taro Hitosugi, Yasmine Sassa, Andreas Suter, Zaher Salman, Thomas Prokscha, and Martin Mansson
    JPS Conf. Proc., 21, 011015 (2018)

  • "Atomic-scale visualization of oxide thin-film surfaces"

    Katsuya Iwaya, Takeo Ohsawa, Ryota Shimizu, Yoshinori Okada, and Taro Hitosugi
    Sci. Technol. Adv. Mat., 19, 282 (2018)


2017

  • "Rapid prediction of molecule arrangements on metal surfaces via Bayesian optimization"

    Daniel M. Packwood and Taro Hitosugi
    Appl. Phys. Express, 10, 6 (2017)

  • "Lithium diffusion in spinel Li4Ti5O12 and LiTi2O4 films detected with 8Li β-NMR"

    Jun Sugiyama, Izumi Umegaki, Takeshi Uyama, Ryan M. L. McFadden, Susumu Shiraki, Taro Hitosugi, Zaher Salman, Hassan Saadaoui, Gerald D. Morris, W. Andrew MacFarlane, and Robert F. Kiefl
    Phys. Rev. B, 96, 094402 (2017)

  • "A new electrode design for ambipolar injection in organic semiconductors"

    Thangavel Kanagasekaran, Hidekazu Shimotani, Ryota Shimizu, Taro Hitosugi, and Katsumi Tanigaki
    Nat. Commun., 8, 999 (2017)

    Press release

    日刊工業新聞

    日経産業新聞

    化学工業日報

  • "Fabrication of atomically abrupt interfaces of single-phase TiH2 and Al2O3"

    Ryota Shimizu, Yuki Sasahara, Hiroyuki Oguchi, Kuniko Yamamoto, Issei Sugiyama, Susumu Shiraki, Shin-ichi Orimo, and Taro Hitosugi
    APL Mater., 5, 086102 (2017)

  • "Quasiparticle interference on cubic perovskite oxide surfaces"

    Yoshinori Okada, Shiue-Yuan Shiau, Tay-Rong Chang, Guoqing Chang, Masaki Kobayashi, Ryota Shimizu, Horng-Tay Jeng, Susumu Shiraki, Hiroshi. Kumigashira, Arun Bansil, Hsin Lin, and Taro Hitosugi
    Phys. Rev. Lett., 119, 086801 (2017)

  • "Scanning tunneling spectroscopy of superconductivity on surfaces of LiTi2O4(111) thin films"

    Yoshinori Okada, Yasunobu Ando, Ryota Shimizu, Emi Minamitani, Susumu Shiraki, Satoshi Watanabe, and Taro Hitosugi
    Nat. Commun., 8, 15975 (2017)

    Press release

    日経産業新聞

    日刊工業新聞

  • "A Nonvolatile Memory Device with Very Low Power Consumption Based on the Switching of a Standard Electrode Potential"

    Issei Sugiyama, Ryota Shimizu, Tohru Suzuki, Kuniko Yamamoto, Hideyuki Kawasoko, Susumu Shiraki, and Taro Hitosugi
    APL Mater., 5, 046105 (2017)

    Selected for "Editor's Picks"

    日経産業新聞

  • "Chemical and Entropic Control on the Molecular Self-Assembly Process"

    Daniel M. Packwood, Patrick Han, and Taro Hitosugi
    Nat. Commun., 8, 14463 (2017)

    Press release

    化学 72, 29 (2017)

  • "Self-assembly of very-low height/width aspect-ratio Li3Ni2NbO6 disks embedded in Li3NbO4 epitaxial films"

    Hideyuki Kawasoko, Ryota Shimizu, Yoshitaka Takagi, Kuniko Yamamoto, Issei Sugiyama, Susumu Shiraki, and Taro Hitosugi
    Thin Solid Films, 621, 202 (2017)


2016

  • "Transparent conducting properties of Re-doped β-MoO3 films"

    Kuniko Yamamoto, Ryota Shimizu, Susumu Shiraki, and Taro Hitosugi
    APL Mater., 4, 096104 (2016)

  • "Monolayer 1T-NbSe2 as a Mott insulator"

    Y. Nakata, K. Sugawara, R. Shimizu, Y. Okada, P. Han, T. Hitosugi, K. Ueno, T. Sato, and T. Takahashi
    NPG Asia Materials, 8, e321 (2016)

    Press release

    化学工業日報

    科学新聞

  • "Vibrational - Electrical Properties Relationship in Donor-Doped TiO2 by Raman Spectroscopy"

    Piero Mazzolini, Valeria Russo, Carlo Spartaco Casari, Taro Hitosugi, Shoichiro Nakao, Tetsuya Hasegawa, and Andrea Li Bassi
    J. Phys. Chem. C, 120, 18878 (2016)

  • "State-Space Reduction and Equivalence Class Sampling for a Molecular Self-Assembly Model"

    Daniel Packwood, Patrick Han, and Taro Hitosugi
    Royal Society Open Science, 3, 150681 (2016)

  • "Negligible Sr segregation on SrTiO3 (001) √13 x √13 rexonstructed surfaces"

    Takeo Ohsawa, Ryota Shimizu, Katsuya Iwaya, Susumu Shiraki and Taro Hitosugi
    Appl. Phys. Lett. 108, 161603 (2016)

  • "Unconventional Charge-Density-Wave Transition in Monolayer 1T-TiSe2"

    Katsuaki Sugawara, Yuki Nakata, Ryota Shimizu, Patrick Han, Taro Hitosugi, Takafumi Sato, and Takashi Takahashi
    ACS Nano. 10, 1341 (2016)

  • "Orientation control of LiCoO2 epitaxial thin films on metal substrates"

    Susumu Shiraki, Yoshitaka Takagi, Ryota Shimizu, Tohru Suzuki, Masakazu Haruta, Yukio Sato, Yuichi Ikuhara, and Taro Hitosugi
    Thin Solid Films 600, 175 (2016)

  • "Preparation and in-situ characterization of well-defined solid electrolyte/electrode interfaces in thin-film lithium batteries"

    Masakazu Haruta, Susumu Shiraki, Takeo Ohsawa, Tohru Suzuki, Akichika Kumatani, Yoshitaka Takagi, Ryota Shimizu, and Taro Hitosugi
    Solid State Ionics 285, 118 (2016)

  • [Proceedings] "Li diffusion in (110)-oriented LiCoO2 thin films grown on Au and Pt (110) substrates"

    Susumu Shiraki, Hideki Oki, and Taro Hitosugi
    Surface and Interface Analysis, 48, 1240 (2016)


2015

  • "Self-Assembly Strategy for Fabricating Connected Graphene Nanoribbons"

    Patrick Han, Kazuto Akagi, Filippo Federici Canova, Ryota Shimizu, Hiroyuki Oguchi, Susumu Shiraki, Paul S. Weiss, Naoki Asao, and Taro Hitosugi
    ACS Nano 9, 12035 (2015)

    Research Highlight

  • "Low-temperature deposition of meta-stable beta-MoO3(011) epitaxial thin films using step-and-terrace substrates"

    Ryota Shimizu, Kuniko Yamamoto, Toru Suzuki, Takeo Ohsawa, Susumu Shiraki, and Taro Hitosugi
    Thin Solid Films 595, 153 (2015)

  • "Pulsed laser deposition of air-sensitive hydride epitaxial thin films: LiH"

    Hiroyuki Oguchi, Shigehito Isobe, Hiroki Kuwano, Susumu Shiraki, Shin-ichi Orimo, and Taro Hitosugi
    APL Mater. 3, 096106 (2015)

  • "A Single-Atom-Thick TiO2 Nanomesh on an Insulating Oxide"

    Takeo Ohsawa, Mitsuhiro Saito, Ikutaro Hamada, Ryota Shimizu, Katsuya Iwaya, Susumu Shiraki, Zhongchang Wang, Yuichi Ikuhara, and Taro Hitosugi
    ACS Nano, 9, 8766 (2015)

    Press release

    日経産業新聞

  • "Li-ion diffusion in Li4Ti5O12 and LiTi2O4 battery materials detected by muon-spin spectroscopy"

    Jun Sugiyama, Hiroshi Nozaki, Izumi Umegaki, Kazuhiko Mukai, Kazutoshi Miwa, Susumu Shiraki, Taro Hitosugi, Andreas Suter, Thomas Prokscha, Zaher Salman, James S. Lord, and Martin Mansson
    Phys. Rev. B 92, 014417 (2015)

  • "Reply to “Comment on 'Bottom-Up Graphene-Nanoribbon Fabrication Reveals Chiral Edges and Enantioselectivity” "

    Patrick Han, Kazuto Akagi, Filippo Federici Canova, Hirotaka Mutoh, Susumu Shiraki, Katsuya Iwaya, Paul S. Weiss, Naoki Asao, and Taro Hitosugi
    ACS Nano, 9, 3404 (2015)

  • "Charge-density wave in Ca-intercalated bilayer graphene induced by commensurate lattice matching"

    Ryota Shimizu, Katsuaki Sugawara, Kohei Kanetani, Katsuya Iwaya, Takafumi Sato, Takashi Takahashi, and Taro Hitosugi
    Phys. Rev. Lett. 114, 146103 (2015)

    Press release

    日経産業新聞

    マイナビニュース

  • "Negligible “negative space-charge layer effects” at oxide-electrolyte/electrode interfaces of thin-film batteries"

    Masakazu Haruta, Susumu Shiraki, Thoru Suzuki, Akichika Kumatani, Takeo Ohsawa, Yoshitaka Takagi, Ryota Shimizu,and Taro Hitosugi
    Nano Lett., 15, 1498 (2015)

    Press release

    JST サイエンスポータル

    日経新聞

    Research Highlight

  • "Direct observation of Dirac cone in multilayer silicene intercalation compound CaSi2"

    Eiichi Noguchi, Katsuaki Sugawara, Ritsuko Yaokawa, Taro Hitosugi, Hideyuki Nakano, and Takashi Takahashi
    Adv. Mater. 27, 856 (2015)

    Press release

    日刊工業新聞


2014


2013

  • "Antiphase inversion domains in lithium cobaltite thin films deposited on single-crystal sapphire substrates"

    S. J. Zheng, C. A. J. Fisher, T. Hitosugi, A. Kumatani, S. Shiraki, Y. H. Ikuhara, A. Kuwabara, H. Moriwake, H. Oki, and Y. Ikuhara
    Acta Materialia, 61, 7671 (2013)

  • "Impact of lithium-ion ordering pattern on surface electronic states of a lithium-ion-battery cathode material"

    Katsuya Iwaya, Takafumi Ogawa, Taketoshi Minato, Kiyotaka Miyoshi, Jun Takeuchi, Akihide Kuwabara, Hiroki Moriwake, Yousoo Kim, and Taro Hitosugi
    Phys. Rev. Lett. 111, 126104 (2013)

    Press release

    日本経済新聞

    日経産業新聞

  • "Wet Etching of Amorphous TiO2 Thin Films Using H3PO4-H2O2 Aqueous Solution"

    Sohei Okazaki, Takuya Ohhashi, Shoichiro Nakao, Yasushi Hirose, Taro Hitosugi, and Tetsuya Hasegawa
    Jpn. J. Appl. Phys. 52, 098002 (2013)

  • "Effects of atomic collisions on the stoichiometry of thin films prepared by pulsed laser deposition"

    Daniel M. Packwood, Susumu Shiraki, and Taro Hitosugi
    Phys Rev. Lett. 111, 036101 (2013)

    Press release

    日経産業新聞

    日刊工業新聞

    日経産業新聞 (2014.10.8)

  • "STM Studies of Isolated Mn12-Ph Single Molecule Magnets"

    K. Reaves, K. Kim, K. Iwaya, T. Hitosugi, H. G. Katzgraber, H. Zhao, K. R. Dunbar, W. Teizer
    SPIN 3, 1350004 (2013)

  • "Capability of Insulator Study by Photoemission Electron Microscopy at SPring-8"

    Takuo Ohkochi, Masato Kotsugi, Keisuke Yamada, Kenji Kawano, Koji Horiba, Fumio Kitajima, Masaki Oura, Susumu Shiraki, Taro Hitosugi, Masaharu Oshima, Teruo Ono, Toyohiko Kinoshita, Takayuki Muro and Yoshio Watanabe
    J. Synchrotron Rad. 20, 620 (2013)

  • "First-Principles Calculations of Lithium-Ion Migration at a Coherent Grain Boundary in Cathode Material LiCoO2"

    Hiroki Moriwake, Akihide Kuwabara, Craig A. J. Fisher, Rong Huang, Taro Hitosugi, Yumi H. Ikuhara, Hideki Oki and Yuichi Ikuhara
    Advanced Materials 25, 618 (2013)


2012


2011

  • "Fabrication of transparent conductive W-doped SnO2 thin films on glass substrates using anatase TiO2 seed layers"

    Shoichiro Nakao, Naoomi Yamada, Taro Hitosugi, Yasushi Hirose, Toshihiro Shimada, Tetsuya Hasegawa
    phys. stat. sol. (c) 8, 543 (2011).

  • "Atomic-scale visualization of initial growth of homoepitaxial SrTiO3 thin film on an atomically ordered substrate"

    R. Shimizu, K. Iwaya, T. Ohsawa, S. Shiraki, T. Hasegawa, T. Hashizume, T. Hitosugi
    ACS Nano 5, 7967 (2011).

  • "Systematic analyses of vibration noise of a vibration isolation system for high-resolution scanning tunneling microscopes"

    K. Iwaya, R. Shimizu, T. Hashizume, T. Hitosugi
    Review of Scientific Instruments 82, 083702 (2011).

  • "An n-type Transparent Conducting Oxide: Nb12O29"

    T. Ohsawa, J. Okubo, T. Suzuki, H. Kumigashira, M. Oshima, T. Hitosugi
    Journal of Physical Chemistry C 115, 16625 (2011).

  • "Atomically resolved silicon donor states of β-Ga2O3"

    K. Iwaya, R. Shimizu, H. Aida, T. Hashizume, T. Hitosugi
    Applied Physics Letters 98, 142116 (2011).

    3D printer
  • "Enhanced carrier transport in uniaxially (001)-oriented anatase Ti0.94Nb0.06O2 films grown on nanosheet seed layers" 

    Naoomi Yamada, Tatsuo Shibata, Kenji Taira, Yasushi Hirose, Shoichiro Nakao, Ngoc Lam Huong Hoang, Taro Hitosugi, Toshihiro Shimada, Takayoshi Sasaki, and Tetsuya Hasegawa
    Appl. Phys. Express 4, 045801 (2011).

  • "Stripe charge ordering in SrO-terminated SrTiO3(001) surfaces" 

    Katsuya Iwaya, Ryota Shimizu, Takeo Ohsawa, Tomihiro Hashizume, Taro Hitosugi
    Physical Review B 83, 125117 (2011).

  • "Real-time direct observation of Li in LiCoO2 cathode material"

    Rong Huang, Taro Hitosugi, Scott D. Findlay, Craig A. J. Fisher, Yumi H. Ikuhara, Hiroki Moriwake, Hideki Oki, and Yuichi Ikuhara
    Appl. Phys. Lett. 98, 051913 (2011).

  • "Wet Etching of TiO2-Based Precursor Amorphous Films for Transparent Electrodes"

    Junpei Ohkubo, Yasushi Hirose, Enju Sakai, Shoichiro Nakao, Taro Hitosugi, Tetsuya Hasegawa
    Jpn. J. Appl. Phys. 50, 018002 (2011).

  • "Simplified process to prepare atomically-ordered TiO2(110)-(1x1) surfaces with steps and terraces"

    R. Shimizu, K. Iwaya, T. Ohsawa, T. Hasegawa, T. Hashizume, T. Hitosugi
    Applied Surface Science 257, 4869 (2011).


2010

  • "Sputter Deposition of High Mobility Sn1-xTaxO2 Films on Anatase TiO2 Coated Glass"

    Naoomi Yamada, Shoichiro Nakao, Taro Hitosugi, and Tetsuya Hasegawa
    Jpn. J. Appl. Phys., 49, 108002 (2010).

  • "Thickness-dependent local surface electronic structures of homoepitaxial SrTiO3 thin films"

    T. Ohsawa, K. Iwaya, R. Shimizu, T. Hashizume, T. Hitosugi
    Journal of Applied Physics 108, 073710 (2010).

  • "Atomically Resolved Surface Structure of SrTiO3(001) Thin Films Grown in Step-Flow Mode by Pulsed Laser Deposition"

    Katsuya Iwaya, Takeo Ohsawa, Ryota Shimizu, Tomihiro Hashizume, Taro Hitosugi
    Applied Physics Express 3, 075701 (2010).

  • "Valence evaluation of LiMnO2 and related battery materials by x-ray absorption spectroscopy"

    H. Wadati, D. G. Hawthorn, T. Z. Regier, G. Chen, T. Hitosugi, T. Mizokawa, A. Tanaka, and G. A. Sawatzky
    Appl. Phys. Lett. 97,022106 (2010).

  • "Pentacene growth on graphite investigated by low-energy electron microscope"

    H. W. Liu, A. Al-Mahboob, Y. Fujikawa, N. Fukui, T. Hitosugi, T. Hashizume, Q. K. Xue, T. Sakurai
    J. Cryst. Growth 312, 967-970 (2010).

  • "Carrier Compensation by Excess Oxygen Atoms in Anatase Ti0.94Nb0.06O2+δ Epitaxial Thin Films"

    Hiroyuki Nogawa, Taro Hitosugi, Akira Chikamatsu, Shoichiro Nakao, Yasushi Hirose, Toshihiro Shimada, Hiroshi Kumigashira, Masaharu Oshima, and Tetsuya Hasegawa
    Jpn. J. Appl. Phys. 49, 041102 (2010).

  • "High mobility exceeding 80 cm2V-1s-1 in polycrystalline Ta-doped SnO2 thin films fabricated on glass using anatase TiO2 seed layers"

    S. Nakao, N. Yamada, T. Hitosugi, Y. Hirose, T. Shimada, T. Hasegawa
    Appl. Phys. Express 3, 031102 (2010).

  • "Preparation of Superconducting Niobium Tips for Atomic ResolutionScanning Tunneling Microscopy/Spectroscopy"

    Ryota Shimizu, Taro Hitosugi, Tomihiro Hashizume, Noritaka Fukuo, Tetsuya Hasegawa
    Japanese Journal of Applied Physics 49, 028004 (2010).

  • "Transport properties and electronic states of anatase Ti1-xWxO2 epitaxial thin films"

    Utahito Takeuchi, Akira Chikamatsu, Taro Hitosugi, Hiroshi Kumigashira, Masaharu Oshima, Yasushi Hirose, Toshihiro Shimada, and Tetsuya Hasegawa
    J. Appl. Phys. 107, 023705 (2010).

  • "Fabrication of highly conductive Ta-doped SnO2 polycrystalline films on glass using seed-layer technique by pulsed laser deposition"

    Shoichiro Nakao, Naoomi Yamada, Taro Hitosugi, Yasushi Hirose, Toshihiro Shimada, and Tetsuya Hasegawa
    Thin Solid Films 318, 3093-3096 (2010).

  • "Transparent conducting Nb-doped anatase TiO2 (TNO) thin films sputtered from various oxide targets"

    Naoomi Yamada, Taro Hitosugi, Junpei Kasai, Ngoc Lam Huong Hoang, Shoichiro Nakao, Yasushi Hirose, Toshihiro Shimada, and Tetsuya Hasegawa
    Thin Solid Films 518, 3101-3104 (2010).

  • "Properties of TiO2-based transparent conducting oxide thin films on GaN(0001) surfaces"

    J. Kasai, T. Hitosugi, M. Moriyama, K. Goshonoo, N. L. H. Hoang, S. Nakao, N. Yamada, T. Hasegawa
    Thin Solid Films 518, 3101-3104 (2010).

  • "Properties of TiO2-based transparent conducting oxides"

    Taro Hitosugi, Naoomi Yamada, Shoichiro Nakao, Yasushi Hirose, and Tetsuya Hasegawa
    Physica Status Solidi A 207, No.7, 1529-1537 (2010).


2009

  • "Preparation of Atomically Flat TiO2(110) Substrate"

    Ryota Shimizu, Taro Hitosugi, Koji S. Nakayama, Toshio Sakurai, Manabu Shiraiwa, Tetsuya Hasegawa, Tomihiro Hashizume
    Jpn. J. Appl. Phys. 48, 125506 (2009).

  • "Fabrication of EuTiO3 epitaxial thin films by pulsed laser deposition"

    Kunitada Hatabayashi, Taro Hitosugi, Yasushi Hirose, Xianqiang Cheng, Toshihiro Shimada, Tetsuya Hasegawa
    Jpn. J. Appl. Phys. 48, 100208 (2009).

  • "DFT-based First-principle Calculation of Nb-doped anatase TiO2 and its Interactions with Oxygen Vacancies and Interstitial Oxygen"

    H. Kamisaka, T. Hitosugi, T. Hasegawa, T. Suenaga, and K. Yamashita
    J. Chem. Phys. 131, 034702 (2009).

  • "Preparation of layered-rhombohedral LiCoO2 epitaxial thin films using pulsed laser deposition"

    Tetsukazu Tsuruhama, Taro Hitosugi, Hideki Oki, Yasushi Hirose, Tetsuya Hasegawa
    Appl. Phys. Express 2, 085502 (2009).

    日経産業新聞
  • "Superconductor-insulator phase transition in single-crystal La2-xSrxCuO4 films grown by the liquid-phase epitaxy method"

    A. T. M. Nazmul Islam, T. Hitosugi, E. Dudzik, T. Hasegawa, S. Ueda, Y. Takano, F. N. Islam, M. K. R. Khan, M. N. Islam, A. K. M. A. Islam, S. Watauchi, and I. Tanaka
    Phys. Rev. B 80, 024505 (2009).

  • "Direct growth of transparent conducting Nb-doped anatase TiO2 polycrystalline films on glass"

    Naoomi Yamada, Taro Hitosugi, Junpei Kasai, Ngoc Lam Huong Hoang, Shoichiro Nakao, Yasushi Hirose, Toshihiro Shimada and Tetsuya Hasegawa
    J. Appl. Phys. 105, 123702 (2009).

  • "Large electron mass anisotropy in a d-electron-based transparent conducting oxide: Nb-doped anatase TiO2 epitaxial films"

    Y. Hirose, N. Yamada, S. Nakao, T. Hitosugi, T. Shimada, T. Hasegawa
    Phys. Rev. B 79, 165108 (2009).

  • "Fabrication of TiO2-based transparent conducting oxide on glass and polyimide substrates"

    T. Hitosugi, N. Yamada, N. L. H. Hoang, J. Kasai, S. Nakao, T. Shimada, T. Hasegawa
    Thin Solid Films 517, 3106-3109 (2009).


2008

  • "Electronic band structure of transparent conductor: Nb-doped anatase TiO2"

    T. Hitosugi, H. Kamisaka, K. Yamashita, H. Nogawa, Y. Furubayashi, S. Nakao, N. Yamada, N. Chikamatsu, H. Kumigashira, M. Oshima, Y. Hirose, T. Shimada, and T. Hasegawa
    Appl. Phys. Express 1, 115001 (2008).

  • "Low-temperature Fabrication of Transparent Conducting Anatase Nb-doped TiO2 Films by Sputtering"

    N. L. H. Hoang, N. Yamada, T. Hitosugi, J. Kasai, S. Nakao, T. Shimada, and T. Hasegawa
    Jpn. J. Appl. Phys. 47, 1184-1187 (2008).

  • "Magnetotransport properties of Fe/pentacene/Co:TiO2 junctions with Fe top contact electrodes prepared by thermal evaporation and pulsed laser deposition"

    T. Shimada, H. Nogawa, T. Noguchi , Y. Furubayashi, Y. Yamamoto, Y. Hirose,T. Hitosugi, T. Hasegawa
    Jpn. J. Appl. Phys. 47, 1184-1187 (2008).

  • "One unit-cell seed layer induced epitaxial growth of heavily nitrogen doped anatase TiO2 films"

    T. L. Chen, Y. Hirose, T. Hitosugi, T. Hasegawa
    J. Phys. D-Appl. Phys. 41, 062005 (2008).

  • "Ferromagnetic rutile CoxTi1?xO2?δ heteroepitaxy on wurtzite GaN and ZnO"

    Yasushi Hirose, Taro Hitosugi, Junpei Kasai, Yutaka Furubayashi, Kiyomi Nakajima, Toyohiro Chikyow, Seiji Konuma, Toshihiro Shimada, and Tetsuya Hasegawa
    phys. stat. sol. (c) 5, No. 9, 3104?3106 (2008).

  • "Structural study of TiO2-based transparent conducting films"

    T. Hitosugi, N. Yamada, S. Nakao, K. Hatabayashi, T. Shimada, and T. Hasegawa
    J. Vac. Sci. Technol. A. 26, 1027-1029 (2008).

  • "Formation Mechanism of One-Dimensional Si Islands on a H/Si(001) Surface"

    J. Nara, H. Kajiyama, T. Hashizume, Y. Suwa, S. Heike, S. Matsuura, T. Hitosugi, and T. Ohno
    Phys. Rev. Lett. 100, 026102 (2008).

  • "Heteroepitaxial Growth of Ferromagnetic Rutile CoxTi1-xO2?δ on GaN (0001)"

    Y. Hirose, T. Hitosugi, J. Kasai, Y. Furubayashi, K. Nakajima, T. Chikyow, S. Konuma, T. Shimada, and T. Hasegawa
    Appl. Phys. Lett. 92, 042503 (2008).

  • "Transparent conducting properties of anatase Ti0.94Nb0.06O2 polycrystalline films on glass substrate"

    T. Hitosugi, A. Ueda, S. Nakao, N. Yamada, Y. Furubayashi, Y. Hirose, S. Konuma, T. Shimada, and T. Hasegawa
    Thin Solid Films 516, 5750?5753 (2008).

  • "Structural, electrical and optical properties of sputter-deposited Nb-doped TiO2 (TNO) polycrystalline films"

    Naoomi Yamada, Taro Hitosugi, Ngoc Lam Huong Hoang, Yutaka Furubayashi, Yasushi Hirose, Seiji Konuma, Toshihiro Shimada, and Tetsuya Hasegawa
    Thin Solid Films 516 , 5754?5757 (2008).


2007

  • "Anatase phase stability and doping concentration dependent refractivity in codoped transparent conducting TiO2 films"

    T. L. Chen, Y. Furubayashi, Y. Hirose, T. Hitosugi, T. Shimada, T. Hasegawa
    J. Phys. D-Appl. Phys. 40, 5961-5964 (2007).

  • "Quantitative analysis of thin-film conductivity by scanning microwave microscope"

    Sohei Okazaki, Noriaki Okazaki, Yasushi Hirose, Yutaka Furubayashi, Taro Hitosugi, Toshihiro Shimada, Tetsuya Hasegawa
    Appl. Surf. Sci. 254, 757-759 (2007).

  • "Direct observation of vortex lattice in Bi2Sr2CaCu2O8+δ by low temperature STM/STS"

    N. Fukuo, H. Mashima, T. Hitosugi, S. Uchida, J. Shimoyama, K. Kishio, Y. Matsumoto , T. Hasegawa
    Physica C 460, 734-735 (2007).

  • "Fabrication of Low Resistivity Nb-doped TiO2 Transparent Conductive Polycrystalline Films on Glass by Reactive Sputtering"

    N. Yamada, T. Hitosugi, N. L. H. Hoang, Y. Furubayashi, Y. Hirose, T. Shimada and T. Hasegawa
    Jpn. J. Appl. Phys. 46, 5275-5277 (2007).

  • "Fabrication of highly conductive Ti1-xNbxO2 polycrystalline films on glass substrates via crystallization of amorphous phase grown by pulsed laser deposition"

    T. Hitosugi, A. Ueda, S. Nakao, N. Yamada, Y. Furubayashi, Y. Hirose, T. Shimada, and T. Hasegawa
    Appl. Phys. Lett. 90, 212106 (2007).

  • "Transport properties of a d-electron based transparent conducting oxide: Anatase Ti1-xNbxO2"

    Yutaka Furubayashi, Taro Hitosugi, Naoomi Yamada, Yasushi Hirose, Yukio Yamamoto, Makoto Otani, Toshihiro Shimada, and Tetsuya Hasegawa
    J. Appl. Phys. 101, 093705 (2007).

  • "Fabrication of TiO2-based transparent conducting oxide films on glass by pulsed laser deposition"

    T. Hitosugi, A. Ueda, Y. Furubayashi, Y. Hirose, S. Konuma, T. Shimada, and T. Hasegawa
    Jpn. J. Appl. Phys. 46, L86 - L88 (2007).

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