メンバーページ

  • img_07
    助教 原田 尚之
    Takayuki Harada
    t.harada_@_imr.tohoku.ac.jp
      (_を抜いてください)
    022-215-2089



  • 略歴

    2011年3月  東京大学工学系研究科
                          応用化学専攻博士課程修了 博士(工学)取得

    2011年4月  東京大学物性研究所 特任研究員

    2013年4月  Max Planck Institute for Solid State Research
                          研究員

    2015年4月  東北大学 金属材料研究所 助教

  • 研究分野

        酸化物エレクトロニクス、薄膜デバイス

  • Recent research topics

    デラフォサイト型層状酸化物の薄膜物性研究
    Highly conductive PdCoO2 ultrathin films for transparent electrodes
    T. Harada, K. Fujiwara, A. Tsukazaki
    APL Materials 6, 046107 (2018).

    水溶性テンプレートによる微細化とデバイス特性評価
    プロセスの詳細
    A versatile patterning process based on easily soluble sacrificial bilayers
    T. Harada and A. Tsukazaki
    AIP Advances 7, 085011 (2017)

    Microfabrication of SrRuO3 thin films on various oxide substrates using LaAlO3/BaOx sacrificial bilayers
    T. Harada and A. Tsukazaki
    Proc. SPIE 10533, 105330X (2018) [Conference proceedings]

    応用例
    Critical current enhancement driven by suppression of superconducting fluctuation in ion-gated ultrathin FeSe
    T. Harada, J. Shiogai, T. Miyakawa, T. Nojima, A. Tsukazaki
    Superconductor Science and Technology 31, 055003 (2018).

    Publication list

    19. Highly conductive PdCoO2 ultrathin films for transparent electrodes
    T. Harada, K. Fujiwara, A. Tsukazaki
    APL Materials 6, 046107 (2018).
    [Selected for Editor's picks]

    18. Critical current enhancement driven by suppression of superconducting fluctuation in ion-gated ultrathin FeSe
    T. Harada, J. Shiogai, T. Miyakawa, T. Nojima, A. Tsukazaki
    Superconductor Science and Technology 31, 055003 (2018).

    17. Enhancement of superconducting transition temperature in FeSe electric-double-layer transistor with multivalent ionic liquids
    T. Miyakawa, J. Shiogai, S. Shimizu, M. Matsumoto, Y. Ito, T. Harada, K. Fujiwara, T. Nojima, Y. Itoh, T. Aida, Y. Iwasa, A. Tsukazaki
    Physical Review Materials 2, 031801(R) (2018).

    16. Microfabrication of SrRuO3 thin films on various oxide substrates using LaAlO3/BaOx sacrificial bilayers
    T. Harada and A. Tsukazaki
    Proc. SPIE 10533, 105330X (2018) [Conference proceedings]

    15. A versatile patterning process based on easily soluble sacrificial bilayers
    T. Harada and A. Tsukazaki
    AIP Advances 7, 085011 (2017)

    14. Superconducting coupling across a spin-filtering manganite tunnel barrier with magnetic disorder
    T. Harada, M. Matvejeff, R. Takahashi, and M. Lippmaa
    EPL 115, 67005 (2016)

    13. Hydrostatic pressure response of an oxide-based two-dimensional electron system
    J. Zabaleta, V. S. Borisov, R. Wanke, H. O. Jeschke, S. C. Parks, B. Baum, A. Teker, T. Harada, K. Syassen, T. Kopp, N. Pavlenko, R. Valentí, and J. Mannhart
    Physical Review B 93, 235117 (2016)

    12. Field-effect transistors with submicrometer gate lengths fabricated from LaAlO3-SrTiO3-based heterostructures
    C. Woltmann, T. Harada, H. Boschker, V. Srot, P. A. van Aken, H. Klauk, and J. Mannhart
    Physical Review Applied 4, 064003 (2015)

    11. Nonmagnetic Sc substitution in a perovskite ferromagnetic insulator Pr0.8Ca0.2MnO3
    T. Harada, R. Takahashi, and M. Lippmaa
    Journal of the Physical Society of Japan 82, 014801 (2013)

    10. Spectroscopic studies on the electronic and magnetic states of Co-doped perovskite manganite Pr0.8Ca0.2Mn1-yCoyO3 thin films
    K. Yoshimatsu, H. Wadati, E. Sakai, T. Harada, Y. Takahashi, T. Harano, G. Shibata, K. Ishigami, K. Kadono, T. Koide, T. Sugiyama, E. Ikenaga, H. Kumigashira, M. Lippmaa, M. Oshima, and A. Fujimori
    Physical Review B 88, 174423 (2013)

    9. Large tunnel magnetoresistance in epitaxial oxide spin-filter tunnel junctions
    T. Harada, I. Ohkubo, M. Lippmaa, Y. Sakurai, Y. Matsumoto, S. Muto, H. Koinuma, and M. Oshima
    Advanced Functional Materials 22, 4471 (2012)
    Highlighted in Back Cover

    img_08
    8. Spin filter tunnel junction with matched Fermi surfaces
    T. Harada, I. Ohkubo, M. Lippmaa, Y. Sakurai, Y. Matsumoto, S. Muto, H. Koinuma, and M. Oshima
    Physical Review Letters 109, 076602 (2012)

    7. Modulation of the ferromagnetic insulating phase in Pr0.8Ca0.2MnO3 by Co substitution
    T. Harada, I. Ohkubo, M. Lippmaa, Y. Matsumoto, M. Sumiya, H. Koinuma, and M. Oshima
    Physica Status Solidi RRL, 5, 34 (2011)

    6. Device size dependence of resistance switching performance in metal/manganite/metal trilayers
    G. Sugano, I. Ohkubo, T. Harada, T. Ohnishi, M. Lippmaa, Y. Matsumoto, H. Koinuma, M. Oshima
    Materials Science and Engineering B 173, 3 (2010)

    5. Dependence of magnetic properties on laser ablation conditions for epitaxial La0.6Sr0.4MnO3 thin films grown by pulsed laser deposition
    T. Harada, I. Ohkubo, and M. Oshima
    Materials transactions 50, 1081 (2009)

    4. Field-induced resistance switching at metal/perovskite manganese oxide interface
    I. Ohkubo, K. Tsubouchi, T. Harada, H. Kumigashira, K. Itaka, Y. Matsumoto, T. Ohnishi, M. Lippmaa, H. Koinuma, and M. Oshima
    Materials Science and Engineering B 148, 13 (2008)

    3. Modification of reflection high-energy electron diffraction system for in-situmonitoring of oxide epitaxy at high oxygen pressure
    K. Tsubouchi, I. Ohkubo, T. Harada, H. Kumigashira, Y. Matsumoto, T. Ohnishi, M. Lippmaa, H. Koinuma, and M. Oshima
    Materials Science and Engineering B 148, 16 (2008)

    2. Trap-controlled space-charge-limited current mechanism in resistance switching at Al/Pr0.7Ca0.3MnO3 interface
    T. Harada, I. Ohkubo, K. Tsubouchi, H. Kumigashira, T. Ohnishi, M. Lippmaa, Y. Matsumoto, H. Koinuma, and M. Oshima
    Applied Physics Letters 92, 222113 (2008)

    日刊工業新聞掲載 (2008/6/7)

    1. Spectroscopic visualization of vortex flows using dye-containing nanofibers
    A. Tsuda, M. A. Alam, T. Harada, T. Yamaguchi, N. Ishii, and T. Aida
    Angewandte Chemie International Edition, 46, 8198 (2007)

    Talks in conferences (After 2015)

    [1] “Properties of single RuO2 layer embedded in SrTiO3”
    T. Harada,IEEE International Magnetics Conference, Beijing, May 14, 2015 [招待講演]

    [2] “酸化物界面を利用したナノデバイス開発”
    原田尚之, 酸化物研究の新機軸に向けた学際討論会, 東北大学, 2017年1月13日 [招待講演]

    [3] “Enhancement of critical-current density against thickness reduction in two-dimensional superconductivity of FeSe EDLT”
    T. Harada, CEMS Topical Meeting on Emergent 2D Materials, Wako, Japan, July 21, 2017 [招待講演]

    [4] “FeSe電気二重層トランジスタの超伝導臨界電流測定”
    原田尚之, 塩貝純一, 宮川智樹, 野島勉, 塚崎敦, 日本物理学会秋季大会, 岩手大学, 2017年9月23日

    [5] “Microfabrication process using LaAlO3/BaOx water-soluble sacrificial bilayers”
    T. Harada, and A. Tsukazaki, SPIE Photonics West, Sanfrancisco, USA, January 30, 2018 [招待講演]

    [6] “機能性薄膜の汎用的微細化プロセスとデバイス開発”
    原田 尚之, Woltmann Carsten, Wittlich Pascal, Mannhart Jochen, 塚﨑 敦, 第65回応用物理学会春季学術講演会, 早稲田大学, 2018年3月17日 [招待講演]

  • 研究室志望の学生さんに一言

    実際の研究現場では、物理や化学といった分野の垣根を越えた幅広い知識を身に着けることができます。
    最先端の研究を一緒に楽しみましょう!