Highly-efficient spin-polarized current source using half-metallic ferromagnet/superconductor junctions.

• Project/Area Number: 22560001
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Applied materials science/Crystal engineering
• Research Institution: Hokkaido University
• Principal Investigator: MATSUDA Ken-ichi 北海道大学, 大学院・情報科学研究科, 助教 (80360931)
• Co-Investigator(Kenkyū-buntansha): YAMAMOTO Masafumi 北海道大学, 大学院・情報科学研究科, 教授 (10322835)
• Co-Investigator(Renkei-kenkyūsha): UEMURA Tetsuya 北海道大学, 大学院・情報科学研究科, 准教授 (21360140)
• Project Period (FY): 2010 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2011: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2010: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
• Keywords: スピントロニクス / エピタキシャル成長 / 新機能材料 / 電子デバイス / 超伝導近接効果 / ハーフメタル強磁性体 / スピン注入素子 / 奇周波超伝導

Research Abstract

In this study, epitaxial growth of Co-based Heusler alloy/superconductor hetero-structures were achieved. Moreover, the existence of spin-polarized superconducting components was implied by the conductance measurement using the hetero-structures.

Research Products

• [Journal Article] Effect of MgO Barrier Insertion on Spin-Dependent Transport Properties of CoFe/n-GaAs Heterojunctions (2012)
  • Author(s): T.Akiho, T.Uemura, M.Harada, K.-i.Matsuda, M.Yamamoto
  • Journal Title: Jpn.J.Appl.Phys. Volume: 51 Issue: 2S Pages: 02BM01-02BM01
  • DOI: 10.1143/jjap.51.02bm01
  • NAID: 210000140290
  • Peer Reviewed
• [Journal Article] Critical effect of spin-dependent transport in a tunnel barrier on enhanced Hanle-type signals observed in three-terminal geometry (2012)
  • Author(s): T. Uemura, K. Kondo, J. Fujisawa, K.-i.Matsuda, and M. Yamamoto
  • Journal Title: Appl. Phys. Lett Volume: vol.101 Issue: 13
  • DOI: 10.1063/1.4754545
  • NAID: 120004883874
  • Peer Reviewed
• [Journal Article] Influence of GaAs surface structure on tunneling anisotropic magnetoresistance and magnetocrystalline anisotropy in epitaxial Co_<50>Fe_<50>/n-GaAs junctions (2011)
  • Author(s): T.Uemura, M.Harada, T.Akiho, K.-i.Matsuda, M.Yamamoto
  • Journal Title: Appl.Phys.Lett. Volume: 98 Issue: 10
  • DOI: 10.1063/1.3561759
  • Peer Reviewed
• [Journal Article] Non-local detection of spin-polarized electrons at room temperature in Co_<50>Fe_<50>/GaAs Schottky tunnel junctions (2011)
  • Author(s): T.Uemura, T.Akiho, M.Harada, K.-i.Matsuda, M.Yamamoto
  • Journal Title: Appl.Phys.Lett. Volume: 99 Issue: 8
  • DOI: 10.1063/1.3630032
  • Peer Reviewed
• [Journal Article] Epitaxial growth of Heusler alloy Co_2MnSi/MgO heterostructures on Ge(001) substrates (2011)
  • Author(s): G.-f.Li, T.Taira, K.-i.Matsuda, M.Arita, T.Uemura, M.Yamamoto
  • Journal Title: Applied Physics Letters Volume: 98 Issue: 26
  • DOI: 10.1063/1.3605675
  • Peer Reviewed
• [Journal Article] Suppression of in-plane tunneling anisotropic magnetoresistance effect in Co_2MnSi/MgO/n-GaAs and CoFe/MgO/n-GaAs junctions by inserting a MeO barrier (2011)
  • Author(s): T.Akiho, T.Uemura, M.Harada, K.-i.Matsuda, M.Yamamoto
  • Journal Title: Appl.Phys.Lett. Volume: 98 Issue: 23
  • DOI: 10.1063/1.3595311
  • Peer Reviewed
• [Journal Article] Influence of GaAs surface structure on tunneling anisotropic magnetoresistance and magnetocrystalline anisotropy in epitaxial Co_<50>Fe_<50>/n-GaAs junctions (2011)
  • Author(s): T.Uemura, M.Harada, T.Akiho, K.-i. Matsuda, M.Yamamoto
  • Journal Title: Appl.Phys.Lett. Volume: 98
  • Peer Reviewed
• [Journal Article] Fabrication and the Transport Properties of NbN /Co_2Cr_0.6Fe_0.4A / NbN Lateral Junctions (2010)
  • Author(s): S. Imai, K.-i. Matsuda, T. Ishikawa, T.Uemura, M. Yamamoto
  • Journal Title: Physica C Volume: vol.470 Pages: S851-S853
  • DOI: 10.1016/j.physc.2009.10.034
  • Peer Reviewed
• [Journal Article] Internal electric field influence on tunneling anisotropic magnetoresistance in epitaxial ferromagnet/n-GaAs junctions (2010)
  • Author(s): T. Uemura, M. Harada, K.-i. Matsuda, M.Yamamoto
  • Journal Title: Appl. Phys. Lett Volume: vol.96 Issue: 25
  • DOI: 10.1063/1.3456558
  • NAID: 120002232163
  • Peer Reviewed
• [Journal Article] Giant Oscillations in Spin-Dependent Tunneling Resistances as a Function of Barrier Thickness in Fully Epitaxial Magnetic Tunnel Junctions with a MgO Barrier (2010)
  • Author(s): T. Marukame, T. Ishikawa, T. Taira, K.-i. Matsuda. T. Uemura, M. Yamamoto
  • Journal Title: Phys. Rev. B Volume: vol.81 Issue: 13
  • DOI: 10.1103/physrevb.81.134432
  • Peer Reviewed
• [Journal Article] Fabrication and the Transport Properties of NbN/Co_2Cr_<0.6>Fe_<0.4>A1/NbN Lateral Junctions (2010)
  • Author(s): S.Imai, K.-i.Matsuda, T.Ishikawa, T.Uemura, M.Yamamoto
  • Journal Title: Physica C Volume: 470
  • Peer Reviewed
• [Journal Article] Internal electric field influence on tunneling anisotropic magnetoresistance in epitaxial ferromagnet/n-GaAs junctions (2010)
  • Author(s): T.Uemura, M.Harada, K.-i.Matsuda, M.Yamamoto
  • Journal Title: Appl.Phys.Lett. Volume: 96
  • NAID: 120002232163
  • Peer Reviewed
• [Journal Article] Giant Oscillations in Spin-Dependent Tunneling Resistances as a Function of Barrier Thickness in Fully Epitaxial Magnetic Tunnel Junctions with a MgO Barrier (2010)
  • Author(s): T.Marukame, T.Ishikawa, T.Taira, K.-i.Matsuda. T.Uemura, M.Yamamoto
  • Journal Title: Phys.Rev.B Volume: 81
  • Peer Reviewed
• [Presentation] Influence of interface termination layeron temperature dependenceof tunneling magnetoresistance of Co_2MnSi / MgO-based magnetic tunnel junctions (2013)
  • Author(s): H.-x. Liu, Y. Honda, K.-i. Matsuda, T.Uemura, M. Yamamoto, F.-y. Shi, and P. Voyles
  • Organizer: 第60回応用物理学会春季学術講演会
  • Place of Presentation: 神奈川工科大学,神奈川県
  • Year and Date: 2013-03-30
• [Presentation] Annealing temperature dependence of spin signalsobserved in Co2MnSi / CoFe /n-GaAs through four-terminal non-local geometry (2013)
  • Author(s): T. Akiho, J. Shan, K.-i. Matsuda, M.Yamamoto, and T. Uemura
  • Organizer: 第60回応用物理学会春季学術講演会
  • Place of Presentation: 神奈川工科大学,神奈川県
  • Year and Date: 2013-03-28
• [Presentation] Transient effects on oblique Hanle signals observed in ferromagnet/semiconductor heterojunctions with non-local four-terminal configuration (2013)
  • Author(s): T. Akiho, J.-h. Shan, K.-i. Matsuda, M.Yamamoto, and T. Uemura
  • Organizer: 12th Joint MMM/Intermag Conf
  • Place of Presentation: Chicago, Illinois, USA
  • Year and Date: 2013-01-18
• [Presentation] Influence of interfacial structural properties on tunnel magnetoresistance in epitaxialmagnetic tunnel junctions with Co_2MnSi electrode and MgO barrier (2013)
  • Author(s): H.-x. Liu, Y. Honda, K.-i. Matsuda, M.Arita, T. Uemura, and M. Yamamoto
  • Organizer: 12thJoint MMM/Intermag Conf
  • Place of Presentation: Chicago, Illinois, USA
  • Year and Date: 2013-01-17
• [Presentation] Nb/Cu50Ni50二層薄膜の電気伝導特性と 超伝導近接効果 (2013)
  • Author(s): 蛯名優也
  • Organizer: 第４８回応用物理学会北海道支部学術講演会
  • Place of Presentation: 釧路市生涯学習センター，北海道
• [Presentation] 高スピン偏極材料を用いたGaAsへのスピン注入 (2012)
  • Author(s): 植村哲也,秋保貴史,松田健一,山本眞史
  • Organizer: 第17回半導体スピン工学の基礎と応用(PASPS17)
  • Place of Presentation: 九州大学伊都キャンパス,稲森フロンティア研究センター,福岡県
  • Year and Date: 2012-12-19
• [Presentation] CoFe/MgO/SC(SC=SiorGe)におけるHanle信号の半導体種依存性 (2012)
  • Author(s): 植村哲也,李桂芳,藤澤潤,松田健一,山本眞史
  • Organizer: 第17回半導体スピン工学の基礎と応用(PASPS17)
  • Place of Presentation: 九州大学伊都キャンパス,稲森フロンティア研究センター,福岡県
  • Year and Date: 2012-12-19
• [Presentation] Electrical spin injection and electrical detection of dynamic nuclear polarization in ferromagnet / semiconductor heterojunctions (2012)
  • Author(s): T. Akiho, J.-h. Shan, K.-i. Matsuda, M.Yamamoto, and T. Uemura
  • Organizer: International Workshop on Spintronic Nano Materials 2012
  • Place of Presentation: Hokkaido Univ., Sapporo, Japan
  • Year and Date: 2012-11-05
• [Presentation] Enhanced coherent tunneling contribution in epitaxial magnetic tunnel junctionswith a Co2MnSi electrode and a MgObarrier due to improved interfacial structural properties (2012)
  • Author(s): H.-x. Liu, Y. Honda, K.-i. Matsuda, T.Uemura, and M. Yamamoto
  • Organizer: The 2nd Int'l Conf. of Asia Union of Magnetics Societies (ICAUMS 2012), The 36th Annual Conf. on Magnetics in Japan
  • Place of Presentation: Nara Prefectural New Public Hall, Nara, Japan
  • Year and Date: 2012-10-02
• [Presentation] Spin transport properties of fully epitaxial magneticjunctions (2012)
  • Author(s): H.-x. Liu, T. Taira, Y. Honda, K.-i.Matsuda, T. Uemura, M. Yamamoto, Y. Miura, and M. Shirai
  • Organizer: 2012 Int'l Conf. on Solid State Devices and Materials (SSDM 2012)
  • Place of Presentation: Kyoto International Conference Center, Kyoto, Japan
  • Year and Date: 2012-09-27
• [Presentation] Transient oblique Hanle signals observed inCo_2MnSi/CoFe/n-GaAs with non-local four-terminal configuration (2012)
  • Author(s): J.-h. Shan, T. Akiho, K.-i. Matsuda, M.Yamamoto, and T. Uemura
  • Organizer: 2012Int'l Conf. on Solid State Devices and Materials (SSDM 2012)
  • Place of Presentation: Kyoto International Conference Center, Kyoto, Japan
  • Year and Date: 2012-09-27
• [Presentation] Tunnel barrier thickness dependence of Hanle-type signals in CoFe / MgO / n-Si and CoFe / MgO / n-Ge junctions investigated through three-terminal configuration (2012)
  • Author(s): T. Uemura, G.-f. Li, J. Fujisawa, K.Konda, K.-i. Matsuda, and M. Yamamoto
  • Organizer: 2012 Int'l Conf. on Solid State Devices and Materials (SSDM 2012)
  • Place of Presentation: Kyoto International Conference Center, Kyoto, Japan
  • Year and Date: 2012-09-27
• [Presentation] Tunnel barrier thickness dependence of Hanle-type signals in CoFe/MgO/n-Ge tunnel junctions investigated through three-terminal configuration (2012)
  • Author(s): G.-f. Li, M. Miki, K.-i. Matsuda, T.Uemura, and M. Yamamoto
  • Organizer: The17th Int'l Conf. on Molecular Beam Epitaxy (MBE 2012)
  • Place of Presentation: Nara Prefectural New Public Hall, Nara, Japan
  • Year and Date: 2012-09-24
• [Presentation] 非局所四端子配置を用いたCo_2MnSi/CoFe/n-GaAsショットキートンネル接合におけるoblique Hanle信号の過渡特性 (2012)
  • Author(s): 単津海,秋保貴史,松田健一,山本眞史,植村哲也
  • Organizer: 2012年(平成24年)秋季第73回応用物理学会学術講演会
  • Place of Presentation: 愛媛大学&松山大学,愛媛県
  • Year and Date: 2012-09-14
• [Presentation] MgO tunnel barrier thickness dependence of three-terminal Hanle-type signals in CoFe/MgO/n-Ge tunnel junctions (2012)
  • Author(s): G.-f. Li,M. Miki, K.-i. Matsuda, T.Uemura, and M. Yamamoto
  • Organizer: 2012年(平成24年)秋季第73回応用物理学会学術講演会
  • Place of Presentation: 愛媛大学&松山大学,愛媛県
  • Year and Date: 2012-09-13
• [Presentation] Co_2MnSi/MgO/NbN接合を用いたホイスラー合金Co_2MnSiのスピン偏極率評価 (2012)
  • Author(s): 松田健一,篠木崇帆,植村哲也,山本眞史
  • Organizer: 2012年(平成24年)秋季第73回応用物理学会学術講演会
  • Place of Presentation: 愛媛大学&松山大学,愛媛県
  • Year and Date: 2012-09-12
• [Presentation] Temperature dependence of spin-dependent tunneling resistances of fully epitaxial Co_2MnSi-based magnetic tunnel junctions (2012)
  • Author(s): H.-x. Liu, Y. Honda, K.-i. Matsuda, T.Uemura, and M. Yamamoto
  • Organizer: 2012年(平成24年)秋季第73回応用物理学会学術講演会
  • Place of Presentation: 愛媛大学&松山大学,愛媛県
  • Year and Date: 2012-09-11
• [Presentation] Spin-polarization measurements for Co_2MnSi using Co_2MnSi/MgO/NbN epitaxial tunnel junctions (2012)
  • Author(s): Ken-ichi Matsuda, Takaho Shinoki, Tomoyuki Taira, Tetsuya Uemura, and Masafumi Yamamoto
  • Organizer: The 19th Int'l Conf. on Magnetism (ICM2012)
  • Place of Presentation: BEXCO, Busan,Korea
  • Year and Date: 2012-07-13
• [Presentation] Possibility of Superconducting Proximity Effect of Equal-spin Triplet Components in NbN/Co2Cr0.6Fe0.4Al/NbN Junctions (2012)
  • Author(s): Ken-ichi Matsuda, Tetsuya Uemura, and Masafumi Yamamoto
  • Organizer: Int'l Conf. on Topological Quantum Phenomena (TQP2012)
  • Place of Presentation: Nagoya University, Nagoya, Japan
  • Year and Date: 2012-05-19
• [Presentation] Temperature dependence of spin-dependent tunneling conductances of fully epitaxial Co_2MnSi-based magnetic tunnel junctions (2012)
  • Author(s): H.-x. Liu, Y. Honda, K.-i. Matsuda, T.Uemura, and M. Yamamoto
  • Organizer: Int'l Magnetics Conf. 2012 (INTERMAG 2012)
  • Place of Presentation: Vancouver Convention Center, Vancouver, Canada
  • Year and Date: 2012-05-10
• [Presentation] Electrical spin injection from Co_2MnSi Heusler alloy into GaAs and electrical detection of dynamic nuclear polarization (2012)
  • Author(s): T. Akiho, T. Uemura, K.-i. Matsuda, and M. Yamamoto
  • Organizer: Int'l Magnetics Conf. 2012 (INTERMAG2012)
  • Place of Presentation: Vancouver Convention Center, Vancouver, Canada
  • Year and Date: 2012-05-08
• [Presentation] MgO thickness dependence of spin accumulation signal in Co_50Fe_50/MgO/Si (2012)
  • Author(s): T. Uemura, J. Fujisawa, K.-i. Matsuda, and M. Yamamoto
  • Organizer: Int'l Magnetics Conf. 2012 (INTERMAG 2012)
  • Place of Presentation: Vancouver Convention Center, Vancouver, Canada
  • Year and Date: 2012-05-08
• [Presentation] Tunnel magnetoresistance in fully epitaxial CoFe/MgO/CoFe magnetic tunnel junctions on Ge(001) substrates via a MgO interlayer (2012)
  • Author(s): G. -f. Li, T. Taira, H.-x. Liu, K.-i.Matsuda, T. Uemura, and M. Yamamoto
  • Organizer: 5th Int'l Symposium on Global COE Program of Center for Next-Generation Information Technology Based on Knowledge Discovery and Knowledge Federation
  • Place of Presentation: Hokkaido University, Sapporo, Japan
  • Year and Date: 2012-01-16
• [Presentation] Temperature dependence of spin-dependent tunneling resistances of MgO-buffered Co MnSi / MgO / Co MnSi magnetic tunnel2 28. G. -f. Li, T. Taira, H.-x. Liu, K.-i.Matsuda, T. Uemura, and M. Yamamoto, "Tunnel magnetoresistance in fully epitaxial CoFe/MgO/CoFe magnetic tunnel junctions on Ge(001) substrates via a MgO interlayer (2012)
  • Author(s): Y. Honda, H.-x. Liu, K.-i. Matsuda, T.Uemura, and M. Yamamoto
  • Organizer: 5th Int'l Symposium on Global COE Program of Center for Next-Generation Information Technology Based on Knowledge Discovery and Knowledge Federation
  • Place of Presentation: Hokkaido University, Sapporo,Japan
  • Year and Date: 2012-01-16
• [Presentation] GaAsショットキートンネル障壁を介した強磁性体からInGaAsチャネルへのスピン注入 (2012)
  • Author(s): 鳥野剛史,松田健一,山本眞史,植村哲也
  • Organizer: 2013年(平成25年)第48回応用物理学会北海道支部学術講演会
  • Place of Presentation: 釧路市生涯学習センター「まなぼっと幣舞」,釧路市
  • Year and Date: 2012-01-12
• [Presentation] Nb/Cu_50Ni_50二層薄膜の電気伝導特性と超電導近接効果 (2012)
  • Author(s): 蛯名優也,松田健一,植村哲也,山本眞史
  • Organizer: 2013年(平成25年)第48回応用物理学会北海道支部学術講演会
  • Place of Presentation: 釧路市生涯学習センター「まなぼっと幣舞」,釧路市
  • Year and Date: 2012-01-12
• [Presentation] Co_2MnSi/CoFe/MgO/SiにおけるHanle信号のMgO膜厚依存性 (2012)
  • Author(s): 藤澤潤,松田健一,山本眞史,植村哲也
  • Organizer: 2013年(平成25年)第48回応用物理学会北海道支部学術講演会
  • Place of Presentation: 釧路市生涯学習センター「まなぼっと幣舞」,釧路市
  • Year and Date: 2012-01-12
• [Presentation] Spin-polarized transport in fully epitaxial CoFe/MgO/CoFe ultrathin layer/Co_2MnSi magnetic tunnel junction (2012)
  • Author(s): 劉宏喜, 本田佑輔, 平智之, 松田健一, 植村哲也, 山本眞史, 三浦, 白井
  • Organizer: 第47回応用物理学会北海道支部学術講演会
  • Place of Presentation: 北海道大学学術交流会館、札幌市(北海道)
  • Year and Date: 2012-01-06
• [Presentation] Co_2MnSi/MgO/NbNヘテロ構造を用いたホイスラー合金Co_2MnSiのスピン偏極率評価 (2012)
  • Author(s): 篠木崇帆, 松田健一, 平智幸, 植村哲也, 山本眞史
  • Organizer: 第47回応用物理学会北海道支部学術講演会
  • Place of Presentation: 北海道大学学術交流会館、札幌市(北海道)
  • Year and Date: 2012-01-06
• [Presentation] Tunnel magnetoresistance in fully epitaxial CoFe/MgO/CoFe magnetic tunnel junctions on Ge(001)substrates via a MgO interlayer (2012)
  • Author(s): 李桂芳, 平智之, 劉宏喜, 松田健一, 植村哲也, 山本眞史
  • Organizer: 第47回応用物理学会北海道支部学術講演会
  • Place of Presentation: 北海道大学学術交流会館、札幌市(北海道)
  • Year and Date: 2012-01-06
• [Presentation] Co_2MnSi/CoFe/n-GaAsにおけるスピン輸送と核磁場の検出 (2012)
  • Author(s): 秋保貴史, 原田雅亘, 植村哲也, 松田健一, 山本眞史
  • Organizer: 第47回応用物理学会北海道支部学術講演会
  • Place of Presentation: 北海道大学学術交流会館、札幌市(北海道)
  • Year and Date: 2012-01-06
• [Presentation] Possibility of superconducting proximity effect of equal-spin triplet components in NbN/Co2Cr0.6Fe0.4Al/NbN junctions (2012)
  • Author(s): Ken-ichi Matsuda
  • Organizer: Topological Quantum Phenomena 2012
  • Place of Presentation: 名古屋大学，愛知県
• [Presentation] Spin-polarization measurements for Co2MnSi using Co2MnSi /MgO/NbN epitaxial tunnel junctions (2012)
  • Author(s): Ken-ichi Matsuda
  • Organizer: 19th International Conference on Magnetism (ICM2012)
  • Place of Presentation: Busan Exhibition and Convention Center(BEXCO), Busan, Korea
• [Presentation] Co2MnSi/MgO/NbN接合を用いたホイスラー合金Co2MnSiのスピン偏極率評価 (2012)
  • Author(s): 松田健一
  • Organizer: 第７３回応用物理学会学術講演会
  • Place of Presentation: 愛媛大学・松山大学，愛媛県
• [Presentation] Co_2MnSiを用いたGaAsへのスピン注入および動的核スピンの検出 (2011)
  • Author(s): 秋保貴史, 原田雅亘, 植村哲也, 松田健一, 山本眞史
  • Organizer: The 16th Symposium on the Physics and Application of Spin-Related Phenomena in Semiconductors (PASPS-16)
  • Place of Presentation: 東京工業大学博物館・百年記念館 フェライト会議室、目黒区(東京都)
  • Year and Date: 2011-11-29
• [Presentation] Non-local electrical detection of Hanle signals in Co_2MnSi/Co_<50>Fe_<50>/n-Ga As Schottky tunnel junctions (2011)
  • Author(s): T.Akiho, T.Uemura, H.Harada, K.-i.Matsuda, M.Yamamoto
  • Organizer: 56th Annual Conference on Magnetism & Magnetic Materials
  • Place of Presentation: JW Marriott Desert Ridge Resort, Scottsdale, Arizon a(USA)
  • Year and Date: 2011-11-03
• [Presentation] Almost identical oscillations in tunneling resistances as a function of barrier thickness for parallel and antiparallel configurations for fully epitaxial magnetic tunnel junctions with a MgO barrier (2011)
  • Author(s): Y.Honda, S.Hirata, H.-x.Liu, K.-i.Matsuda, T.Uemura, M.Yamamoto
  • Organizer: 56th Annual Conference on Magnetism & Magnetic Materials
  • Place of Presentation: JW Marriott Desert Ridge Resort, Scottsdale, Arizon a (USA)
  • Year and Date: 2011-11-02
• [Presentation] Spin-dependent transport properties of fully epitaxial magnetic tunnel junctions of CoFe/MgO/CoFe ultrathin layer /Co2MnSi (2011)
  • Author(s): H.-x. Liu, T. Taira, Y. Honda, K. -i.Matsuda, T. Uemura, M. Yamamoto, Y. Miura, and M. Shirai
  • Organizer: 56th Annual Conf. onMagnetism & Magnetic Materials, JW Marriott Desert Ridge
  • Place of Presentation: Scottsdale, Arizona, USA
  • Year and Date: 2011-11-01
• [Presentation] Spin-dependent transport properties of fully epitaxial magnetic tunnel junctions of CoFe/MgO/CoFe ultrathin layer/Co_2MnSi (2011)
  • Author(s): H.-x.Liu, T.Taira, Y.Honda, K.-i.Matsuda, T.Uemura, M.Yamamoto, Y.Miura, M.Shirai
  • Organizer: 56th Annual Conference on Magnetism & Magnetic Materials
  • Place of Presentation: JW Marriott Desert Ridge Resort, Scottsdale, Arizon a(USA)
  • Year and Date: 2011-11-01
• [Presentation] Fabrication of epitaxial magnetic tunnel junctions with a Co_2MnSi thin film and a MgO barrier on Ge(001) substrates via a MgO interlayer (2011)
  • Author(s): G.-f.Li, T.Taira, H.-x.Liu, K.-i.Matsuda, T.Uemura, M.Yamamoto
  • Organizer: 56th Annual Conference on Magnetism & Magnetic Materials
  • Place of Presentation: JW Marriott Desert Ridge Resort, Scottsdale, Arizon a(USA)
  • Year and Date: 2011-11-01
• [Presentation] Fabrication of fully epitaxial magnetic tunnel junctions with CoFe electrodes and a MgO barrier on Ge(001)substrates via a MgO interlayer (2011)
  • Author(s): G.-f.Li, T.Taira, H.-x.Liu, K.-i.Matsuda, T.Uemura, M.Yamamoto
  • Organizer: 2011 Int'l Conf. on Solid State Devices and Mate rials
  • Place of Presentation: WINC AICHI, Nagoya (Japan)
  • Year and Date: 2011-09-30
• [Presentation] Effect of MgO Barrier Insertion on Spin-dependent Transport Properties of CoFe/n-GaAs (2011)
  • Author(s): T.Akiho, M.Harada, T.Uemura, K.-i.Matsuda, M.Yamamoto
  • Organizer: 2011 Int'l Conf. on Solid State Devices and Mate rials
  • Place of Presentation: WINC AICHI, Nagoya (Japan)
  • Year and Date: 2011-09-30
• [Presentation] Co_<50>Fe_<50>電極からGaAsへのスピン注入の電気的検出 (2011)
  • Author(s): 植村哲也, 秋保貴史, 原田雅亘, 松田健一, 山本眞史
  • Organizer: 第35回日本磁気学会
  • Place of Presentation: 新潟コンベンションセンター(朱鷺メッセ)、新潟市(新潟県)
  • Year and Date: 2011-09-30
• [Presentation] Effect of GaAs Surface Structure on Tunneling Anisotropic Magnetoresistance in Epitaxial Co50Fe50/n-GaAs Junctions (2011)
  • Author(s): T.Uemura, T.Akiho, M.Harada, K.-i.Matsuda, M.Yamamoto
  • Organizer: 2011 International Conference on Solid State Devices and Materials
  • Place of Presentation: WINC AICHI, Nagoya (Japan)
  • Year and Date: 2011-09-29
• [Presentation] Epitaxial growth of Heusler alloy Co_2MnSi thin films on Ge(001) substrates via a MgO interlayer (2011)
  • Author(s): 李桂芳, 平智之, 松田健一, 有田正志, 植村哲也, 山本眞史
  • Organizer: 第35回日本磁気学会
  • Place of Presentation: 新潟コンベンションセンター(朱鷺メッセ)、新潟市(新潟県)
  • Year and Date: 2011-09-27
• [Presentation] Co_2MnSi/MgO/Co_2MnSiエピタキシャルMTJにおけるトンネル抵抗のバリア膜厚に対する磁化平行と反平行に共通する振動 (2011)
  • Author(s): 本田佑輔, 平田進之佑, 劉宏喜, 松田健一, 植村哲也, 山本眞史
  • Organizer: 秋季第72回応用物理学関係連合講演会
  • Place of Presentation: 山形大学小白川キャンパス、山形市(山形県)
  • Year and Date: 2011-09-02
• [Presentation] CoFe/n-GaAsヘテロ接合におけるスピン依存伝導特性のMgO層挿入効果 (2011)
  • Author(s): 秋保貴史, 植村哲也, 原田雅亘, 松田健一, 山本眞史
  • Organizer: 秋季第72回応用物理学関係連合講演会
  • Place of Presentation: 山形大学小白川キャンパス、山形市(山形県)
  • Year and Date: 2011-08-31
• [Presentation] Co_<50>Fe_<50>を用いたGaAsへの室温におけるスピン注入 (2011)
  • Author(s): 植村哲也, 秋保貴史, 原田雅亘, 松田健一, 山本眞史
  • Organizer: 秋季第72回応用物理学関係連合講演会
  • Place of Presentation: 山形大学小白川キャンパス、山形市(山形県)
  • Year and Date: 2011-08-31
• [Presentation] Structural and magnetic properties of epitaxially grown Heusler alloy Co_2MnSi/MgO heterostructures on Ge(001)substrates (2011)
  • Author(s): 李桂芳, 平智之, 松田健一, 有田正志, 植村哲也, 山本眞史
  • Organizer: 秋季第72回応用物理学関係連合講演会
  • Place of Presentation: 山形大学小白川キャンパス、山形市(山形県)
  • Year and Date: 2011-08-30
• [Presentation] Spin-dependent tunneling characteristics of Heusler alloy/MgO heterostructures (2011)
  • Author(s): M.Yamamoto, T.Uemura, K.-i.Matsuda
  • Organizer: 5^<th> International Workshop on Spin Currents
  • Place of Presentation: Sendai International Center, Sendai (Japan)(招待講演)
  • Year and Date: 2011-07-27
• [Presentation] Spin injection from Co_<50>Fe_<50> into GaAs at room temperature (2011)
  • Author(s): T.Akiho, M.Harada, T.Uemura, K.-i.Matsuda, M.Yamamoto
  • Organizer: 5^<th> International Workshop on Spin Currents
  • Place of Presentation: Sendai International Center, Sendai (Japan)
  • Year and Date: 2011-07-27
• [Presentation] Oscillations in spin-dependent tunneling resistances as a function of MgO barrier thickness in epitaxial magnetic tunnel junctions with Heusler alloy Co_2MnSi electrodes (2011)
  • Author(s): Y.Honda, S.Hirata, H.-x.Liu, K.-i.Matsuda, T.Uemura, M.Yamamoto
  • Organizer: 5^<th> International Workshop on Spin Currents
  • Place of Presentation: Sendai International Center, Sendai (Japan)
  • Year and Date: 2011-07-27
• [Presentation] Electrical detection of spin injection from Co_<50>Fe_<50> into GaAs at room temperature (2011)
  • Author(s): T.Uemura, M.Harada, T.Akiho, K.-i.Matsuda, M.Yamamoto
  • Organizer: 15th International Conference on Modulated Semi conductor Structures (MSS 15)
  • Place of Presentation: Florida State University C onference Center, Tallahassee, FL (USA)
  • Year and Date: 2011-07-26
• [Presentation] Epitaxial growth of Heusler alloy Co_2MnSi/MgO heterostructure on Ge(001)substrate (2011)
  • Author(s): G.-f.Li, T.Taira, K.-i.Matsuda, T.Uemura, M.Yamamoto
  • Organizer: 2011 International Magnetics Conference (INTERMAG 2011)
  • Place of Presentation: Taipei International Convention Center, Taipei (Taiwan)
  • Year and Date: 2011-04-29
• [Presentation] Spin-dependent transport properties of Co_2MnSi/MgO/n-GaAs tunnel junctions (2011)
  • Author(s): T.Akiho, M.Harada, T.Uemura, K.-i.Matsuda, M.Yamamoto
  • Organizer: 2011 International Magnetics Conference (INTERMAG 2011)
  • Place of Presentation: Taipei International Convention Center, Taipei (Taiwan)
  • Year and Date: 2011-04-26
• [Presentation] Electrical injection and detection of spin-polarized electrons in an epitaxial Co_<50>Fe_<50>/n-GaAs junction (2011)
  • Author(s): T.Uemura, M.Harada. T.Akiho, K.-i.Matsuda, M.Yamamoto
  • Organizer: 2011 International Magnetics Conference (INTERMAG 2011)
  • Place of Presentation: Taipei International Convention Center, Taipei (Taiwan)
  • Year and Date: 2011-04-26
• [Presentation] Epitaxial growth of Co2MnSi/MgO heterostructures on Ge(001) substrates (2011)
  • Author(s): 本田佑輔,平田進之佑,李桂芳, 劉宏喜,松田健一,植村哲也,山本眞史
  • Organizer: 2011年(平成23年)春季第58回応用物理学関係連合講演会.
  • Place of Presentation: 神奈川工科大学(厚木市)
  • Year and Date: 2011-03-26
• [Presentation] Epitaxial growth of Co2MnSi/MgO heterostructures on Ge(001) substrates (2011)
  • Author(s): G.-f.Li, T.Taira, K.-i.Matsuda, T.Uemura, M.Yamamoto
  • Organizer: 2011年(平成23年)春季第58回応用物理学関係連合講演会
  • Place of Presentation: 神奈川工科大学(厚木市)
  • Year and Date: 2011-03-25
• [Presentation] Epitaxial growth of Co_2MnSi/MgO heterostructures on Ge(001) substrates (2011)
  • Author(s): G.-f.Li, T.Taira, K.-i.Matsuda, T.Uemura, M.Yamamoto
  • Organizer: 2011年(平成23年)春季第58回応用物理学関係連合講演会
  • Place of Presentation: 神奈川工科大学(厚木市)
  • Year and Date: 2011-03-25
• [Presentation] Co_50Fe_50/n-GaAsにおけるスピン注入の電気的検出 (2011)
  • Author(s): 植村哲也,原田雅亘,秋保貴史,松田健一,山本眞史
  • Organizer: 2011年(平成23年)春季第58回応用物理学関係連合講演会
  • Place of Presentation: 神奈川工科大学(厚木市)
  • Year and Date: 2011-03-24
• [Presentation] Co_<50>Fe_<50>/n-GaAsにおけるスピン注入の電気的検出 (2011)
  • Author(s): 植村哲也, 原田雅亘, 秋保貴史, 松田健一, 山本眞史
  • Organizer: 2011年(平成23年)春季第58回応用物理学関係連合講演会
  • Place of Presentation: 神奈川工科大学(厚木市)
  • Year and Date: 2011-03-24
• [Presentation] High tunnel magnetoresistance in fully epitaxial CoFe-buffered Co2MnSi/MgO/Co2MnSi magnetic tunnel junctions (2011)
  • Author(s): H.-x. Liu, T.Taira, K.-i.Matsuda, T.Uemura, M.Yamamoto
  • Organizer: 4th International Symposium on Global COE Program of Center for Next-Generation Information Technology Based on Knowledge Discovery and Knowledge Federation.
  • Place of Presentation: Hokkaido University Sapporo, Japan
  • Year and Date: 2011-01-18
• [Presentation] Spin-dependent transport properties of Co_2MnSi/MgO/n-GaAs tunnel junctions (2011)
  • Author(s): G.-f.Li, T.Taira, K.-i.Matsuda, T.Uemura, M.Yamamoto
  • Organizer: 4th International Symposium on Global COE Program of Center for Next-Generation Information Technology Based on Knowledge Discovery and Knowledge Federation.
  • Place of Presentation: Hokkaido University, Sapporo, Japan
  • Year and Date: 2011-01-18
• [Presentation] High tunnel magnetoresistance in fully epitaxial CoFe-buffered Co_2MnSi/MgO/Co_2MnSi magnetic tunnel junctions (2011)
  • Author(s): H.-x. Liu, T.Taira, K.-i.Matsuda, T.Uemura, M.Yamamoto
  • Organizer: 4^<th> International Symposium on Global COE Program of Center for Next-Generation Information Technology Based on Knowledge Discovery and Knowledge Federation
  • Place of Presentation: Sapporo, Japan
  • Year and Date: 2011-01-18
• [Presentation] Spin-dependent transport properties of Co_2MnSi/MgO/n-GaAs tunnel junctions (2011)
  • Author(s): G.-f.Li, T.Taira, K.-i.Matsuda, T.Uemura, M.Yamamoto
  • Organizer: 4^<th> International Symposium on Global COE Program of Center for Next-Generation Information Technology Based on Knowledge Discovery and Knowledge Federation
  • Place of Presentation: Sapporo, Japan
  • Year and Date: 2011-01-18
• [Presentation] Co2MnSi薄膜を用いた強磁性トンネル接合におけるスピン依存トンネル抵抗のMgOバリア膜厚依存性 (2011)
  • Author(s): 平田進之佑,李桂芳,本田佑輔,松田健一,植村哲也,山本眞史
  • Organizer: 2011年(平成23年)第46回応用物理学会北海道支部学術講演会
  • Place of Presentation: 室蘭工業大学(室蘭市)
  • Year and Date: 2011-01-07
• [Presentation] 強磁性体/n-GaAsヘテロ接合におけるトンネル特性のMgO層挿入効果 (2011)
  • Author(s): 原田雅亘,秋保貴史,植村哲也,松田健一,山本眞史
  • Organizer: 2011年(平成23年)第46回応用物理学会北海道支部学術講演会
  • Place of Presentation: 室蘭工業大学(室蘭市)
  • Year and Date: 2011-01-07
• [Presentation] Co_2MnSi薄膜を用いた強磁性トンネル接合におけるスピン依存トンネル抵抗のMgOバリア膜厚依存性 (2011)
  • Author(s): 平田進之佑, 李桂芳, 本田佑輔, 松田健一, 植村哲也, 山本眞史
  • Organizer: 2011年(平成23年)第46回応用物理学会北海道支部学術講演会
  • Place of Presentation: 室蘭工業大学(室蘭市)
  • Year and Date: 2011-01-07
• [Presentation] 強磁性体/n-GaAsヘテロ接合におけるトンネル特性のMgO層挿入効果 (2010)
  • Author(s): 秋保貴史, 原田雅亘, 植村哲也, 松田健一, 山本眞史
  • Organizer: The 15^<th> Symposium on the Physics and Application of Spin-Related Phenomena in Semiconductors (PASPS-15)
  • Place of Presentation: 筑波大学(つくば市)
  • Year and Date: 2010-12-21
• [Presentation] Highly spin-polarized tunneling characteristics at room temperature in magnetic tunnel junctions with a half-metallic Heusler-alloy spin source and a MgO barrier (2010)
  • Author(s): H.-x.Liu, T.Taira, Y.Honda, K.-i. Matsuda, T.Uemura, M. Yamamoto
  • Organizer: 55th Annual Conference on Magnetism & Magnetic Materials
  • Place of Presentation: Atlanta, GA, USA
  • Year and Date: 2010-10-17
• [Presentation] Giant oscillations of spin-dependent tunneling resistances as a function of MgO barrier thickness in fully epitaxial magnetic tunnel junctions of Co_2Cr_<0.6>Fe_<0.4>AI/MgO/Co_2Cr_<0.6>Fe_<0.4>A1 (2010)
  • Author(s): M.Yamamoto, T.Marukame, T.Ishikawa, T.Taira, K.-i.Matsuda, T.Uemura
  • Organizer: 55th Annual Conference on Magnetism & Magnetic Materials
  • Place of Presentation: Atlanta, GA, USA
  • Year and Date: 2010-10-16
• [Presentation] Superconducting proximity effect of spin-triplet pairs in NbN/Co_2Cr_<0.6>Fe_0.4A1/NbN junctions (2010)
  • Author(s): K.-i. Matsuda, T.Uemura, M.Yamamoto
  • Organizer: 55th Annual Conference on Magnetism & Magnetic Materials
  • Place of Presentation: Atlanta, GA, USA
  • Year and Date: 2010-10-15
• [Presentation] Giant tunnel magnetoresistance in half-metallic Co_2MnSi-based fully epitaxial magnetic tunnel junctions (2010)
  • Author(s): T.Taira, H.-x.Liu, S.Hirata, K.-i.Matsuda, T. Uemura, M.Yamamoto
  • Organizer: 55th Annual Conference on Magnetism & Magnetic Materials
  • Place of Presentation: Atlanta, GA, USA
  • Year and Date: 2010-10-15
• [Presentation] Tunnel magnetoresistance characteristics of fully epitaxial Co_2MnAI/MgO/CoFe MTJs with various Mn compositions in Co_2MnAl electrodes (2010)
  • Author(s): 李桂芳, 平智幸, 平田進之佑, 松田健一, 植村哲也, 山本眞史
  • Organizer: 日本金属学会2010年秋期(第147回)大会
  • Place of Presentation: 北海道大学(札幌市)
  • Year and Date: 2010-09-25
• [Presentation] Highly spin-polarized tunneling in Heusler-alloy-based magnetic tunnel junctions with a Co_2MnSi upper electrode and a MgO barrier (2010)
  • Author(s): H.-x.Liu, T.Taira, Y.Honda, K.-i.Matsuda, T.Uemura, M.Yamamoto
  • Organizer: 2010 International Conference on Solid State Devices and Materials
  • Place of Presentation: Tokyo, Japan
  • Year and Date: 2010-09-24
• [Presentation] Co_2MnSi/MgO/n-GaAsトンネル接合におけるスピン依存伝導特性 (2010)
  • Author(s): 原田雅亘, 秋保貴史, 植村哲也, 松田健一, 山本眞史
  • Organizer: 2010年(平成22年)秋季第71回応用物理学会学術講演会
  • Place of Presentation: 長崎大学(長崎市)
  • Year and Date: 2010-09-17
• [Presentation] Tunnel magnetoresistance characteristics of fully epitaxial Co_2MnAl/MgO/CoFe MTJs with various Mn compositions in Co_2MnAl electrodes (2010)
  • Author(s): H.-x.Liu, T.Taira, Y.Honda, K.-i.Matsuda, T.Uemura M.Yamamoto
  • Organizer: 2010年(平成22年)秋季第71回応用物理学学会学術講演会
  • Place of Presentation: 長崎大学(長崎市)
  • Year and Date: 2010-09-14
• [Presentation] Giant oscillations in spin-dependent tunneling resistances as a function of barrier thickness in fully epitaxial magnetic tunnel junctions with a MgO barrier (2010)
  • Author(s): 山本眞史, 丸亀孝生, 石川貴之, 平智幸, 松田健一, 植村哲也
  • Organizer: 2010年(平成22年)秋季第71回応用物理学会学術講演会
  • Place of Presentation: 長崎大学(長崎市)
  • Year and Date: 2010-09-14
• [Presentation] Co_2MnSi/MgO/n-GaAsトンネル接合におけるスピン依存伝導特性 (2010)
  • Author(s): 松田健一, 植村哲也, 山本眞史
  • Organizer: 2010年(平成22年)秋季第71回応用物理学学会学術講演会
  • Place of Presentation: 長崎大学(長崎市)
  • Year and Date: 2010-09-14
• [Presentation] High tunnel magnetoresistance in fully epitaxial Co_<50>Fe_<50>-buffered Co_2MnSi/MgO/Co_2MnSi mgnmetic tunnel junctions (2010)
  • Author(s): H.x.Liu, T.Taira, Y.Honda, K.-i.Matsuda, T.Uemura M.Yamamoto
  • Organizer: 第34回日本磁気学会学術講演会
  • Place of Presentation: つくば国際会議場(つくば市)
  • Year and Date: 2010-09-06
• [Presentation] High tunnel magnetoresistance in fully epitaxial Co_<50>Fe_<50>-buttered Co_2MnSi/MgO/Co2MnSi magnetic tunnel junctions (2010)
  • Author(s): 植村哲也, 原田雅亘, 秋保貴史, 松田健一, 山本眞史
  • Organizer: 第34回日本磁気学会学術講演会
  • Place of Presentation: つくば国際会議場(つくば市)
  • Year and Date: 2010-09-06
• [Presentation] Electrical detection of a non-local signal in Co_2MnSi/MgO/n-GaAs tunnel junctions (2010)
  • Author(s): M.Harada, T.Uemura, T.Akiho, K.-i.Matsuda, M.Yamamoto
  • Organizer: 6^<th> International Conference on the Physics and Application of Spin Related Phenomena in Semiconductors (PASPS-VI)
  • Place of Presentation: Tokyo, Japan
  • Year and Date: 2010-08-03
• [Remarks]
  • URL: http://nsed.ist.hokudai.ac.jp/contents/article/article.html
• [Remarks]
  • URL: http://nsed.ist.hokudai.ac.jp/contents/article/article.html