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    助教 塩貝 純一
    Junichi Shiogai
    junichi.shiogai_@_imr.tohoku.ac.jp
    (_を抜いてください)
    TEL: 022-215-2089
    FAX: 022-215-2086
    略歴
    2014年3月東北大学大学院工学研究科 博士課程修了
    2014年4月東北大学金属材料研究所 助教

研究分野
    薄膜物性
    電界効果
    スピントロニクス


主要論文・業績

多価イオンを用いたFeSe電気二重層トランジスタにおける超伝導転移温度の上昇
img_07 Tomoki Miyakawa, Junichi Shiogai, Sunao Shimizu, Michio Matsumoto, Yukihiro Ito, Takayuki Harada, Kohei Fujiwara, Tsutomu Nojima, Yoshimitsu Itoh, Takuzo Aida, Yoshihiro Iwasa, and Atsushi Tsukazaki
Enhancement of superconducting transition temperature in FeSe electric-double-layer transistor with multivalent ionic liquids
Phys. Rev. Mater. 2, 031801(R) (2018)

トポロジカル絶縁体(Bi1-xSbx)2Se3のFermi準位制御
img_07 Yosuke Satake, Junichi Shiogai, Daichi Takane, Keiko Yamada, Kohei Fujiwara, Seigo Souma, Takafumi Sato, Takashi Takahashi, Atsushi Tsukazaki
Fermi-level tuning of the Dirac surface state in (Bi1-xSbx)2Se3 thin films
J. Phys. Condens. Matter 30, 085501 (2018)

層状半導体GaSeのスピン軌道相互作用
img_07Shoichi Takasuna, Junichi Shiogai, Shunichiro Matsuzaka, Makoto Kohda, Yutaka Oyama, and Junsaku Nitta
Weak antilocalization induced by Rashba spin-orbit interaction in layered III-VI compound semiconductor GaSe thin films
Phys. Rev. B 96, 161303(R) (2017)
プレスリリース

層状鉄系超伝導体FeSeの極薄膜物性
img_07J. Shiogai, M. Ito, T. Mitsuhashi, T. Nojima, and A. Tsukazaki
Electric-field-induced superconductivity in electrochemically-etched ultrathin FeSe films on SrTiO3 and MgO
Nature Phys. 12, 42 (2016)
プレスリリース

スピン流のショット雑音測定
img_07Tomonori Arakawa, Junichi Shiogai, Mariusz Ciorga, Martin Utz, Dieter Schuh, Makoto Kohda, Junsaku Nitta, Dominique Bougeard, Dieter Weiss, Teruo Ono, and Kensuke Kobayashi
Shot Noise Induced by Nonequilibrium Spin Accumulation
Phys. Rev. Lett. 114, 016601 (2015)
プレスリリース

3端子Hanle効果の増幅現象
img_07Junichi Shiogai, Mariusz Ciorga, Martin Utz, Dieter. Schuh, Makoto Kohda, Dominique Bougeard, Tsutomu Nojima, Junsaku Nitta, and Dieter Weiss
Giant enhancement of spin detection sensitivity in (Ga,Mn)As/GaAs Esaki diodes
Phys. Rev. B 89, 081307(R) (2014)
プレスリリース


研究室志望の学生さんに一言
    研究生活は小さな発見の連続です。私たちと一緒に体験してみませんか。

原著論文

    2018

  1. Junichi Shiogai, Shojiro Kimura, Satoshi Awaji, Tsutomu Nojima, Atsushi Tsukazaki
    Anisotropy of the upper critical field and its thickness dependence in superconducting FeSe electric-double-layer transistors
    Phys. Rev. B 97, 174520 (2018)

  2. T. Harada, J. Shiogai, T. Miyakawa, T. Nojima, and A. Tsukazaki
    Critical-current enhancement driven by suppression of superconducting fluctuation in ion-gated ultrathin FeSe
    Supercond. Sci. Technol. 31, 055003 (2018)

  3. J. Shiogai, M. Ciorga, M. Utz, D. Schuh, M. Kohda, D. Bougeard, T. Nojima, D. Weiss, and J. Nitta
    Spatial variation of dynamic nuclear spin polarization probed by the non-local Hanle effect
    Appl. Phys. Lett. 112, 132403 (2018)

  4. Tomoki Miyakawa, Junichi Shiogai, Sunao Shimizu, Michio Matsumoto, Yukihiro Ito, Takayuki Harada, Kohei Fujiwara, Tsutomu Nojima, Yoshimitsu Itoh, Takuzo Aida, Yoshihiro Iwasa, and Atsushi Tsukazaki
    Enhancement of superconducting transition temperature in FeSe electric-double-layer transistor with multivalent ionic liquids
    Phys. Rev. Mater. 2, 031801(R) (2018)

  5. Yosuke Satake, Junichi Shiogai, Daichi Takane, Keiko Yamada, Kohei Fujiwara, Seigo Souma, Takafumi Sato, Takashi Takahashi, Atsushi Tsukazaki
    Fermi-level tuning of the Dirac surface state in (Bi1-xSbx)2Se3 thin films
    J. Phys. Condens. Matter 30, 085501 (2018)

  6. Y. Fujishiro, N. Kanazawa, T. Shimojima, A. Nakamura, K. Ishizaka, T. Koretsune, R. Arita, A. Miyake, H. Mitamura, K. Akiba, M. Tokunaga, J. Shiogai, S. Kimura, S. Awaji, A. Tsukazaki, A. Kikkawa, Y. Taguchi, and Y. Tokura
    Large magneto-thermopower in MnGe with topological spin texture
    Nature Comm. 9, 408 (2018) DOI: 10.1038/s41467-018-02857-1

  7. 2017

  8. Shoichi Takasuna, Junichi Shiogai, Shunichiro Matsuzaka, Makoto Kohda, Yutaka Oyama, and Junsaku Nitta
    Weak antilocalization induced by Rashba spin-orbit interaction in layered III-VI compound semiconductor GaSe thin films
    Phys. Rev. B 96, 161303(R) (2017)

  9. K. Fujiwara, J. Shiogai, and A. Tsukazaki
    Fabrication of tetragonal FeSe-FeS alloy film with high sulfur contents by alternate deposition
    Jpn. J. Appl. Phys. 56, 100308 (2017)

  10. K. Fujiwara, K. Nishihara, J. Shiogai, and A. Tsukazaki
    Enhanced electron mobility at the two-dimensional metallic surface of BaSnO3 electric-double-layer transistor at low temperatures
    Appl. Phys. Lett., 110, 203503 (2017)

  11. Junichi Shiogai, Tomoki Miyakawa, Yukihiro Ito, Tsutomu Nojima, and Atsushi Tsukazaki
    Unified trend of superconducting transition temperature against Hall coefficient for ultrathin FeSe films prepared on different oxide substrates
    Phys. Rev. B 95, 115101 (2017)

  12. 2016

  13. K. Fujiwara, K. Nishihara, J. Shiogai, and A. Tsukazaki
    High field-effect mobility at the (Sr,Ba)SnO3/BaSnO3 interface
    AIP Advances 6, 085014 (2016) DOI: 10.1063/1.4961637

  14. Junichi Shiogai, Kazuki Nishihara, Kazuhisa Sato and Atsushi Tsukazaki
    Improvement of electron mobility in La:BaSnO3 thin films by insertion of an atomically flat insulating (Sr,Ba)SnO3 buffer layer
    AIP Advances 6, 065305 (2016) DOI: 10.1063/1.4953808

  15. H. Masuda, H. Sakai, M. Tokunaga,Y. Yamasaki, A. Miyake, J. Shiogai, S. Nakamura, S. Awaji, A. Tsukazaki, H. Nakao, Y. Murakami, T. -H. Arima, Y. Tokura, S. Ishiwata
    Quantum Hall effect in a bulk antiferromagnet EuMnBi2 with magnetically confined two-dimensional Dirac fermions
    Science Advances 2, e1501117 (2016) DOI: 10.1126/sciadv.1501117

  16. J. Shiogai, M. Ito, T. Mitsuhashi, T. Nojima, and A. Tsukazaki
    Electric-field-induced superconductivity in electrochemically-etched ultrathin FeSe films on SrTiO3 and MgO
    Nature Phys. 12, 42 (2016)

  17. 2015

  18. Junichi Shiogai, Tatsuro Ohashi, Tim Yang, Makoto Kohda, Takeshi Seki, Koki Takanashi, and Junsaku Nitta
    Enhancement of electric field modulation of coercivity in Pt / Co / Al-O structures by tuning Co surface oxidation
    J. Phys. D: Appl. Phys. 49, 03LT01 (2015)

  19. K. Ueda, J. Fujioka, B.-J. Yang, J. Shiogai, A. Tsukazaki, S. Nakamura, S. Awaji, N. Nagaosa, and Y. Tokura
    Magnetic Field-Induced Insulator-Semimetal Transition in a Pyrochlore Nd2Ir2O7
    Phys. Rev. Lett. 115, 056402 (2015)

  20. J. Shiogai, M. Ciorga, M. Utz, D. Schuh, M. Kohda, D. Bougeard, T. Nojima, D. Weiss, and J. Nitta
    In-plane tunneling anisotropic magnetoresistance in (Ga,Mn)As/GaAs Esaki diodes in the regime of the excess current
    Appl. Phys. Lett. 106, 262402 (2015)

  21. R. Ohsugi, J. Shiogai, Y. Kunihashi, M. Kohda, H. Sanada, T. Seki, M. Mizuguchi, H. Gotoh, K. Takanashi, and J. Nitta
    Comparison of electrical and optical detection of spin injection in L10-FePt/MgO/GaAs hybrid structures
    J. Phys. D Appl. Phys. 48 164003 (2015)

  22. Tomonori Arakawa, Junichi Shiogai, Mariusz Ciorga, Martin Utz, Dieter Schuh, Makoto Kohda, Junsaku Nitta, Dominique Bougeard, Dieter Weiss, Teruo Ono, and Kensuke Kobayashi
    Shot Noise Induced by Nonequilibrium Spin Accumulation
    Phys. Rev. Lett. 114, 016601 (2015)

  23. 2014

  24. Junichi Shiogai, Mariusz Ciorga, Martin Utz, Dieter Schuh, Makoto Kohda, Dominique Bougeard, Tsutomu Nojima, Junsaku Nitta, and Dieter Weiss
    Giant enhancement of spin detection sensitivity in (Ga,Mn)As/GaAs Esaki diodes
    Phys. Rev. B 89, 081307(R) (2014)

  25. Markus Ehlert, Cheng Song, Mariusz Ciorga, Thomas Hupfauer, Junichi Shiogai, Martin Utz, Dieter Schuh, Dominique Bougeard, and Dieter Weiss
    All-electrical detection of spin Hall effect in semiconductors
    Phys. Status Solidi B 251, 1725 (2014) DOI: 10.1002/pssb.201350206 (2014)

  26. 2012

  27. J. Shiogai, M. Ciorga, M. Utz, D. Schuh, T. Arakawa, M. Kohda, K. Kobayashi, T. Ono, W. Wegscheider, D. Weiss, and J. Nitta
    Dynamic nuclear spin polarization in an all-semiconductor spin injection device with (Ga,Mn)As/n-GaAs spin Esaki diode
    Appl. Phys. Lett. 101, 212402 (2012)

  28. 2011

  29. J. Shiogai, D. Schuh, W. Wegscheider, M. Kohda, J. Nitta, and D. Weiss
    Magnitude and sign control of lithography-induced uniaxial anisotropy in ultra-thin (Ga,Mn)As wires
    Appl. Phys. Lett. 98, 083101 (2011)

  30. 2010

  31. M. Kohda, J. Ogawa, J. Shiogai, F. Matsukura, Y. Ohno, H. Ohno, and J. Nitta
    Width and temperature dependence of lithography-induced magnetic anisotropy in (Ga,Mn)As
    Physica E 42, 2685 (2010)