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Surface and Interface Magnetism Studied by Spin Polarized Light and Electrons

Research Project

Project/Area Number 03452042
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 固体物性
Research InstitutionOsaka University

Principal Investigator

SUGA Shigemasa  Osaka University, Faculty of Eng. Sci., Professor, 基礎工学部, 教授 (40107438)

Co-Investigator(Kenkyū-buntansha) CHO Kikuo  Osaka University, Faculty of Eng. Sci., Professor, 基礎工学部, 教授 (60013489)
IMADA Shin  Osaka University, Faculty of Eng. Sci., Research Assistant, 基礎工学部, 助手 (90240837)
DAIMON Hiroshi  Osaka University, Faculty of Eng. Sci., Assoc. Professor, 基礎工学部, 助教授 (20126121)
Project Period (FY) 1991 – 1992
Project Status Completed (Fiscal Year 1992)
Budget Amount *help
¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1992: ¥1,000,000 (Direct Cost: ¥1,000,000)
KeywordsSpin Polarized Electrons / Photoemission / Inverse Photoemission / Magnetic Circular Dichroism / MCD / Spin Exchange Splitting / Surface Magnetism / Interface Magnetism / 超薄模磁性体
Research Abstract

1: Development of a spin polarized electron gun A p-type GaAs single crystal was cleaned by Ar ion beam sputtering and then annealed in ultra-high vacuum of 10^<-10> Torr. Small amount of Cs was deposited onto it. Subsequent O_2 exposure realized a stable NEA(negative electron affinity) photo-cathode. The photoexcitation was done by a semiconductor laser. Life time(1/e) of the NEA cathode was about two hours after the Cs evaporation and the O_2 exposure was stopped at 20muA.
2: An electron spin analyzer of the diffuse scattering type by use of a Au thin film is manufactured. The asymmetry of the scattered beam is going to be detected by 4 independent Ceratrons. As an energy analyzer in front of the spin analyzer, we use a Jost type analyzer.
3: Magnetic thin film sample: We are now growing single crystal of Fe on Ag thin film grown onto Si(111) substrate. Magnetic circular dichroism measurement of the photoemission intensity and angular distribution by use of circularly polarized synchrotron radiation is under way at photon Factory.
4. Measurement of the exchange splitting of the 3d, 3s states were done on Mn_2Sb and MnAlGe. Inverse photoemission was fully employed for the measurement of the 3d state.
. Magnetic circular dichroism measurement of Mn 2p core states in the above Mn compounds was successfully done providing the different contributions of nonequivalent Mn sites.

Report

(3 results)
  • 1992 Annual Research Report   Final Research Report Summary
  • 1991 Annual Research Report
  • Research Products

    (17 results)

All Other

All Publications (17 results)

  • [Publications] 松下 智裕: "Resonance Photoemission Spectroscopy of Mn_2As,Cr_2As and Fe_2As" Jpn.J.Appl.Phys.31. 1767-1770 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 木村 昭夫: "Unoccupied Electronic States and Exchange Splitting of M_2As and MnAlGe" Solid State Commun.(1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 菅 滋正: "XPS and BIS Studies of Electronic Structures of Sm_3Se_4 and Sm_4As_3" Physica B. (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 菅 滋正: "XPS and BIS Stndies of CePd_2Al_3" Physica B. (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 菅 滋正: "Studies of Electronic Structures of Cu_2Sb Type Intermetiallic Compounds in Recent Advances in Magnetism of Transition Metal Compoumds" World Scientific、Singapore 分担執筆, 12(350) (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Matsusita Tomohiro: "Resonance Photoemission Spectroscopy of Mn_2As, Cr_2As and Fe_2As" Jpn. J. Appl. Phys.31. 1767-1770 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Kimura Akio: "Unoccupied Electronic States and Exchange Splitting of M_2As and MnAlGe" Solid State Commun.(1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Suga Shigeemasa: "XPS and BIS Studies of Electronic Structures of Sm_3Se_4 and Sm_4As_3" Physica B. (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Suga Shigemasa: "XPS and BIS Studies of CePd_2Al_3" Physica B. (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Suga Shigemasa: World Scientific. Studies Electronic Structures of Cu_2Sb Type Intermetallic compounds Recent Advances in Magnetism of Transition Metal Compounds, 12350 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 松下 智裕: "Resonance Photoemission Spectroscopy of Mn_2As,Cr_2As and Fe_2As" Jpn.J.Appl.Phys.31. 1767-1770 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 木村 昭夫: "Unoccupied Electronic States and Exchange Splitting of M_2As and MnAlGe" Solid State Commun.(1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] 菅 滋正: "XPS and BIS Studies of Electronic structures of Sm_3Se_4and Sin_4As_3" Physica B. (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] 菅 滋正: "XPS and BIS Studies of CePd_2Al_3" Physica B. (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] 菅 滋正: "Studies of Eletronic Structures of Cu_2Sb Type Intermetallic Compounds Recent Advances in Magnetism of Transition Metal Compounds" World Scientific,Singapore 分担執筆, 12(350) (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] 木村 昭夫: "Electronic Structures of Mn_2Sb and MnAlGe:Photoemission and Inverse Photoemission Spectroscopy" Solid State Communications. 81. 645-648 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 斉藤 祐児: "BIS and XPS study of YbP,YbAs and Yb_4As_3" Jounal of The Physical Society of Japan. 60. 4005-4008 (1991)

    • Related Report
      1991 Annual Research Report

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Published: 1992-04-01   Modified: 2016-04-21  

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