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2012 Fiscal Year Final Research Report

First-principles calculation of conductivity of magnetic alloys and magnetic multilayers

Research Project

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Project/Area Number 22560654
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Physical properties of metals
Research InstitutionTohoku University

Principal Investigator

SAKUMA Akimasa  東北大学, 大学院・工学研究科, 教授 (30361124)

Co-Investigator(Kenkyū-buntansha) TSUCHIURA Hiroki  東北大学, 大学院・工学研究科, 准教授 (30374961)
Project Period (FY) 2010 – 2012
Keywords電気伝導 / 電子状態 / 第一原理計算
Research Abstract

Within the framework of the Kubo formula, we developed a calculation tool of conductivity tensor of magnetic materials by using the first principles technique for the electronic structure. Appling this method to the spintronics materials, we studied the effects of chemical disorder and spin fluctuation on the electrical resistivity, anomalous magnetoresistance effects (AMR), anomalous Hall effect and spin polarization.

  • Research Products

    (42 results)

All 2013 2012 2011 2010

All Journal Article (14 results) (of which Peer Reviewed: 14 results) Presentation (27 results) Book (1 results)

  • [Journal Article] Theoretical Verification of Magnetic Anisotropy in Tetragonal Fe-Co Alloys2013

    • Author(s)
      Yohei Kota and Akimasa Sakuma
    • Journal Title

      Journal of the Magnetics Society of Japan

      Volume: 37 (2) Pages: 17-23

    • DOI

      DOI:10.3379/msjmag.1302R001.

    • Peer Reviewed
  • [Journal Article] Effect of Spin Torque on Magnetization Awitching Speed Having Nonuniform Spin Distribution2012

    • Author(s)
      Kazushige Hyodo, Chiharu Mitsumata and Akimasa Sakuma
    • Journal Title

      IEEE TRANSACTION ON MAGNETICS

      Volume: 48 (11) Pages: 3951-3954

    • DOI

      DOI:10.1109/TMAG.2012.2198913.

    • Peer Reviewed
  • [Journal Article] Degree of Order Dependence on Magnetocrystalline Anisotropy in Body-Centered Tetragonal FeCo Alloys2012

    • Author(s)
      Yohei Kota and Akimasa Sakuma
    • Journal Title

      Applied Physics Express

      Volume: 5 Pages: 113002-1-113002-3

    • DOI

      DOI:10.1143/APEX.5.113002.

    • Peer Reviewed
  • [Journal Article] Microscopic Theory of Magnon-Drag Thermoelectric Transport inFerromagnetic Metals2012

    • Author(s)
      Daisuke Miura and Akimasa Sakuma
    • Journal Title

      Journal ofPhysical Society of Japan

      Volume: 81 Pages: 113602-1-113602-3

    • DOI

      DOI:10.1143/JPSJ.81.113602.

    • Peer Reviewed
  • [Journal Article] Daisuke Miura andAkimasa Sakuma, Theoretical Study on Gilbert Damping of Nonuniform Magnetization Precession in Ferromagnetic Metals2012

    • Author(s)
      Nobuyuki Umetsu
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 81 Pages: 114716-1-114716-4

    • DOI

      DOI:10.1143/JPSJ.81.114716.

    • Peer Reviewed
  • [Journal Article] Magnetocrystalline anisotropy in FePtwith L10 ordering and tetragonal distortion2012

    • Author(s)
      Yohei Kota and Akimasa Sakuma
    • Journal Title

      Journal of Applied Physics

      Volume: 111 Pages: 07A310-1-07A310-3

    • DOI

      DOI:10.1063/1.3671436.

    • Peer Reviewed
  • [Journal Article] Microscopic theory for Gilbert damping in materials with inhomogeneous spin dynamics2012

    • Author(s)
      Nobuyuki Umetsu, Daisuke Miura and Akimasa Sakuma
    • Journal Title

      Journal of Applied Phyisics

      Volume: 111 Pages: 07D117-1-07D117-3

    • DOI

      DOI:10.1063/1.3675999.

    • Peer Reviewed
  • [Journal Article] Charge and Spin Transport in Magnetic Tunnel Junctions:Microscopic Theory2012

    • Author(s)
      Daisuke Miura and Akimasa Sakuma
    • Journal Title

      Journal ofPhysical Society of Japan

      Volume: 81 Pages: 054709-1-054709-6

    • DOI

      DOI:10.1143/JPSJ.81.054709.

    • Peer Reviewed
  • [Journal Article] First-Principles Study on the Gilbert Damping Constants of Transition Metal Alloys, Fe-Ni and Fe-Pt systems2012

    • Author(s)
      Akimasa SAKUMA
    • Journal Title

      Journal ofthe Physical Society of Japan

      Volume: 81(8) Pages: 084701-1-084701-5

    • DOI

      DOI:10.1143/JPSJ.81.084701.

    • Peer Reviewed
  • [Journal Article] Relationship between Magnetocrystalline Anisotropy and Orbital Magnetic Moment in L10-Type Ordered and Disordered Alloys2012

    • Author(s)
      Yohei KOTA and Akimasa SAKUMA
    • Journal Title

      Journal of the Physical Society ofJapan

      Volume: 81(8) Pages: 084705-1-084705-6

    • DOI

      DOI:10.1143/JPSJ.81.084705.

    • Peer Reviewed
  • [Journal Article] Spin-dependent Electrical Resistivity in Ferromagnets by Magnetic Fluctuations2011

    • Author(s)
      Y. Kota and A. Sakuma
    • Journal Title

      J. Magn. Soc. Jpn

      Volume: 35 Pages: 374-379

    • Peer Reviewed
  • [Journal Article] First-Principles Study of Electrical Resistivity in Co_2MnSi Compounds2011

    • Author(s)
      Y. Kota and A. Sakuma
    • Journal Title

      IEEE Trans. Magn

      Volume: 47 Pages: 4405-4408

    • DOI

      DOI:10.1109/TMAG.2011.2158300

    • Peer Reviewed
  • [Journal Article] First-principles study for electronic structure and physical property of Co-based Heusler alloys2011

    • Author(s)
      Y. Kota and A. Sakuma
    • Journal Title

      Journal ofPhysics: Conf. Ser

      Volume: 266 Pages: 0120 94-1- 0 12 094-5

    • DOI

      DOI:10.1088/1742-6596/266/012094

    • Peer Reviewed
  • [Journal Article] Charge and spin currents in magnetic multi layers in the presence of both electric field and spin dynamics2011

    • Author(s)
      D. Miura and A. Sakuma
    • Journal Title

      Journal ofPhysics; Conf. Ser

      Volume: 266 Pages: 0120 81-1- 0 12 081-5

    • DOI

      DOI:10.1088/1742-6596/266/012081

    • Peer Reviewed
  • [Presentation] 不純物散乱によるスピン緩和の理論研究2013

    • Author(s)
      梅津信之,三浦大介,佐久間昭正
    • Organizer
      日本物理学会第68回
    • Place of Presentation
      広島
    • Year and Date
      20130326-29
  • [Presentation] 第一原理計算によるbct-FeCo合金の異常ホール伝導度に対する研究2013

    • Author(s)
      兵頭一茂,小田洋平,佐久間昭正
    • Organizer
      日本物理学会第68回
    • Place of Presentation
      広島
    • Year and Date
      20130326-29
  • [Presentation] Theoreticalverification of magnetocrystalline anisotropy in tetragonal Fe-Co alloys2012

    • Author(s)
      Y. Kota, and A. Sakuma
    • Organizer
      ICAUMS
    • Place of Presentation
      Nara, Japan
    • Year and Date
      20121002-05
  • [Presentation] Microscopic theory on the spin relaxation in an inhomogeneous spin dynamics2012

    • Author(s)
      N. Umetsu, D. Miura and A. Sakuma
    • Organizer
      The 19th International Conference on Magnetism
    • Place of Presentation
      Busan, Korea
    • Year and Date
      20120709-13
  • [Presentation] Microscopic theory of magnon-drag thermodynamic transport in ferromagnetic metals2012

    • Author(s)
      D. Miura and A. Sakuma
    • Organizer
      The 19th International Conference on Magnetism
    • Place of Presentation
      Busan,Korea
    • Year and Date
      20120709-13
  • [Presentation] First-principles study of conductivity tensor in transition metals and alloys2012

    • Author(s)
      Y. Kota and A. Sakuma
    • Organizer
      The 19th International Conference on Magnetism
    • Place of Presentation
      Busan, Korea
    • Year and Date
      20120709-13
  • [Presentation] Effect of Spin Torque on Magnetization Switching Speed Having Nonuniform Spin Distribution2012

    • Author(s)
      K. Hyodo, C. Mitsumata, and A.Sakuma
    • Organizer
      Intermag
    • Place of Presentation
      Vancouver, Canada
    • Year and Date
      20120507-11
  • [Presentation] 不均-スピンダイナミクスにおけるスピン緩和機構2012

    • Author(s)
      梅津信之,三浦大介,佐久間昭正
    • Organizer
      日本物理学会第67回年次大会
    • Place of Presentation
      関西学院大学
    • Year and Date
      2012-03-26
  • [Presentation] 遷移金属合金のスピンホール伝導度の第一原理計算2012

    • Author(s)
      小田洋平,佐久間昭正
    • Organizer
      日本物理学会第67回年次大会
    • Place of Presentation
      関西学院大学
    • Year and Date
      2012-03-25
  • [Presentation] 強磁性金属におけるマグノン・ドラッグ熱電特性の微視的理論2012

    • Author(s)
      三浦大介,佐久間昭正
    • Organizer
      日本物理学会第67回年次大会
    • Place of Presentation
      関西学院大学
    • Year and Date
      2012-03-24
  • [Presentation] ギルバート緩和に関する理論と計算2012

    • Author(s)
      佐久間昭正
    • Organizer
      日本磁気学会第183回研究会
    • Place of Presentation
      中央大学駿河台記念館
    • Year and Date
      2012-03-22
  • [Presentation] 遷移金属合金の伝導度テンソルの第一原理計算2011

    • Author(s)
      小田洋平,佐久間昭正
    • Organizer
      第35回日本磁気学会学術講演会
    • Place of Presentation
      新潟コンベンションセンター
    • Year and Date
      2011-09-28
  • [Presentation] 遷移金属合金の伝導度テンソルの第一原理計算2011

    • Author(s)
      小田洋平,佐久間昭正
    • Organizer
      日本物理学会2011年秋季大会
    • Place of Presentation
      富山大学
    • Year and Date
      2011-09-23
  • [Presentation] 磁気トンネル接合におけるスピンポンピングの微視的記述2011

    • Author(s)
      三浦大介,梅津信之,佐久間昭正
    • Organizer
      日本物理学会2011年秋季大会
    • Place of Presentation
      富山大学
    • Year and Date
      2011-09-22
  • [Presentation] スピン電場により誘起されるスピン流の磁化ダイナミクスへの影響2011

    • Author(s)
      兵頭一茂,佐久間昭正
    • Organizer
      日本物理学会2011年秋季大会
    • Place of Presentation
      富山大学
    • Year and Date
      2011-09-21
  • [Presentation] 遷移金属合金のAMRの第一原理計算2011

    • Author(s)
      小田洋平,佐久間昭正
    • Organizer
      日本物理学会第66回年次大会
    • Place of Presentation
      新潟大学
    • Year and Date
      2011-03-25
  • [Presentation] 磁気トンネル接合においてスピンダイナミクスにより誘起されるスピントルクの微視的記述2011

    • Author(s)
      三浦大介,佐久間昭正
    • Organizer
      日本物理学会第66回年次大会
    • Place of Presentation
      新潟大学
    • Year and Date
      2011-03-25
  • [Presentation] 磁性多層膜のギルバート緩和に関する微視的理論II2011

    • Author(s)
      梅津信之,三浦大介,佐久間昭正
    • Organizer
      日本物理学会第66回年次大会
    • Place of Presentation
      新潟大学
    • Year and Date
      2011-03-25
  • [Presentation] 磁性体の磁気緩和の微視的理論2011

    • Author(s)
      佐久間昭正
    • Organizer
      応用物理学関連連合講演会
    • Place of Presentation
      神奈川工科大学
    • Year and Date
      2011-03-24
  • [Presentation] スピンの動力学に伴う電流とスピン流の微視的理論2011

    • Author(s)
      佐久間昭正
    • Organizer
      第33回スピンエレクトロニクス専門研究会
    • Place of Presentation
      中央大学
    • Year and Date
      2011-01-14
  • [Presentation] Microscopic Theory of Charge and Spin Currents in Magnetic Tunnel Junctions2010

    • Author(s)
      A. Sakuma and D. Miura
    • Organizer
      International Conference of AUMS
    • Place of Presentation
      Jeju Island, Korea
    • Year and Date
      2010-12-07
  • [Presentation] 強磁性遷移金属合金のスピン依存抵抗の第一原理計算2010

    • Author(s)
      小田洋平,佐久間昭正
    • Organizer
      第39回ナノマグネティックス専門研究会
    • Place of Presentation
      中央大学
    • Year and Date
      2010-12-03
  • [Presentation] Microscopic theory of spin torque induced by spin dynamics in magnetic tunnel junctions2010

    • Author(s)
      D. Miura and A. Sakuma
    • Organizer
      MMM2010
    • Place of Presentation
      Atlanta, USA
    • Year and Date
      2010-11-16
  • [Presentation] 強磁性金属のスピン状態に依存した散乱効果を含む電気抵抗率の第一原理計算2010

    • Author(s)
      小田洋平,佐久間昭正
    • Organizer
      日本物理学会2010年秋季大会
    • Place of Presentation
      大阪府立大学
    • Year and Date
      2010-09-25
  • [Presentation] 磁性多層膜のギルバート緩和に関する微視的理論2010

    • Author(s)
      梅津信之,三浦大介,佐久間昭正
    • Organizer
      日本物理学会2010年秋季大会
    • Place of Presentation
      大阪府立大学
    • Year and Date
      2010-09-25
  • [Presentation] 電場とスピンダイナミクスにより誘起される磁性多層膜におけるスピン流と電流の微視的記述2010

    • Author(s)
      三浦大介,佐久間昭正
    • Organizer
      日本物理学会2010年秋季大会
    • Place of Presentation
      大阪府立大学
    • Year and Date
      2010-09-25
  • [Presentation] 強磁性体の静的スピン揺らぎによる磁気抵抗効果2010

    • Author(s)
      小田洋平,佐久間昭正
    • Organizer
      日本磁気学会学術講演会
    • Place of Presentation
      つくば国際会議場
    • Year and Date
      2010-09-06
  • [Book] 磁性の電子論2010

    • Author(s)
      佐久間昭正
    • Total Pages
      343
    • Publisher
      共立出版

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Published: 2014-08-29  

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