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Inverse Photoemission Spectroscopy of Semimagnetic Semiconductors

Research Project

Project/Area Number 02452041
Research Category

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

Allocation TypeSingle-year Grants
Research Field 固体物性
Research InstitutionHIROSHIMA UNIVERSITY

Principal Investigator

TANIGUCHI Masaki  Hiroshima Univ. Facul. of Sci. Professor, 理学部, 教授 (10126120)

Co-Investigator(Kenkyū-buntansha) SAKURAI Junji  Toyama Univ. Facul. of Sci. Professor, 理学部, 教授 (30033814)
OHTA Toshiaki  Univ. of Tokyo, Facul. of Sci. Professor, 理学部, 教授 (80011675)
TOBIYAMA Makoto  Hiroshima Univ. Facul. of Sci. Research Associate, 理学部, 助手 (60207595)
YOKOYAMA Toshihiko  Hiroshima Univ. Facul. of Sci. Research Associate, 理学部, 助手 (20200917)
Project Period (FY) 1990 – 1992
Project Status Completed (Fiscal Year 1992)
Budget Amount *help
¥6,600,000 (Direct Cost: ¥6,600,000)
Fiscal Year 1992: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1991: ¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 1990: ¥4,500,000 (Direct Cost: ¥4,500,000)
KeywordsSemimagnetic Semiconductor / Inverse Photoemission Spectroscopy / Electronic State / Empty Level / Orbital Mixing / Density of States / Hot Wall Epitaxy / Thin Film Single Crystal / ホットウォール エピタキシー / 電子物性 / ホットウォ-ル法
Research Abstract

Aim of the present study is to obtain information on unoccupied conduction bands of Cd_<1-x>Mn_xY(Y=S,Se,Te) using inverse photoemission spectroscopy (IPES) and to reveal a whole electronic structure from a combination of new IPES and previous photoemission spectra.
IPES spectra are measured by monitoring intensity of the emitted ultraviolet photon-flux as a function of incident electron energy of 1-10 muA. On the other hand, since the resistivity of Cd_<1-x>Mn_xY(Y=S,Se,Te) is -100 MOMEGA, charging effect takes place and, thus, makes measurements difficult. One can avoid such a problem using thin film single crystals of Cd_<1-x>Mn_xY(Y=S,Se,Te). 1990:(1)To prepare thin film single crystals of Cd_<1-x>Mn_xY(Y=S,Se,Te), an appratus of hot wall epitaxy was designed and installed. (2)An ultrahigh vacuum chamber, in which the apparatus is placed, was made. This chamber was used as a sample preparation chamber for the IPES measurements.1991:(1)Cd_<1-x>Mn_xTe samples with -100 A thickness were grown in the preparation chamber. (2)IPES spectra of Cd_<1-x>Mn_xTe samples were successfully obtained. 1992:(1)Dependence of the IPES spectra of Cd_<1-x>Mn_xTe on the Mn concentration was systematically investigated and analyzed in detail. (2)Combination of photoemission and IPES spectra revealed a whole electronic structure of Cd_<1-x>Mn_xTe. In addition, the Mn 3d spin-exchange splitting energy was accurately determined to be 7.1*0.2 eV for the first time.
Mayor part of the initial purpose has been achieved. The present work will be extended to other Cd_<1-x>Mn_xY(Y=S,Se,Te) alloys.

Report

(4 results)
  • 1992 Annual Research Report   Final Research Report Summary
  • 1991 Annual Research Report
  • 1990 Annual Research Report
  • Research Products

    (23 results)

All Other

All Publications (23 results)

  • [Publications] N.Happo,H.Sato,K.Mimura,S.Hosokawa,M.Taniguchi,Y.Ueda and M.Koyama: "Validity of Many-body Final States for Satellite in Photoemission Spectra of Cd_<1-x>Mn_xTe" Phys.Reu.B15.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Y.Ueda,M.Taniguchi,I.Souma and Y,Oka: "Fe 3d States in Cd_<0.89> Fe_<0.11> Se" Phys.Reu.B15.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Y.Ueda,K.Nishihara,K.Mimura,Y.Hari,M.Taniguchi and M.Fujisawa: "Performance of Inverse Photoemission Spectrometer with A New Bandpass photon Detector and High Sensitivity." Nucl.Instrum.& Methods. (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] K.Yokoyama,K.Nishihara,K.Mimura,Y.Hari,M.Taniguchi,Y.Ueda and M.Fujisawa: "Bandpass photon Detector for Inverse Photoemission Spectroscopy." Reu.Sci.Instrum.(1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] M.Taniguchi,K.Soda,I.Souma and Y.Oka: "Electronic Structure of Zn_<1-x>Mn_xTe" Phys.Reu.B15. 46. 15789-15794 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] N.Hoppo,H.Sato,S.Hosokawa,Y.Ueda and M.Taniguchi: "EXAFS Study of Semimagnetic Semiconductors Zn_<1-x>Mn_xTe Mn 3d Electronic States and Mn-Te Local Coordination" Proceedings of the 7th International Conference on X-Ray Absorption Fine Structure (Kobe). (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] N.Happo, H.Sato, K.Mimura, S.Hosokawa, M.Taniguchi, Y.Ueda, and M.Koyama: "Validity of Many-body Final States for Satellite in Photoemission Spectra of Cd_<1-x>Mn_xTe" Phys. Rev. B15.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Y.Ueda, M.Taniguchi, I.Souma, and Y.Oka: "Fe 3d States in Cd_<0.89>Fe_<0.11>Se" Phys. Rev. B15.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Y.Ueda, K.Nishihara, K.Mimura, Y.Hari, M.Taniguchi, and M.Fujisawa: "Performance of Inverse Photoemission Spectrometer with A New Bandpass Photon Detector of Narrow Bandwidth and High Sensitivity." Nucl. Instrum. & Methods. (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] K.Yokoyama, K.Nishihara, K.Mimura, Y.Hari, M.Taniguchi, Y.Ueda, and M.Fujisawa: "Bandpass Photon Detector for Inverse Photoemission Spectroscopy" Rev. Sci. Instrum. (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] M.Taniguchi, K.Soda, I.Souma, and Y.Oka: "Electronic Structure of Zn_<1-x>Mn_xTe" Phys. Rev. B15. 15789-15794 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] N.Happo, H.Sato, S.Hosokawa, Y.Ueda, and M.Taniguchi: "EXAFS Study of Semimagnetic Semiconductors Zn_<1-x>Mn_xTe:Mn 3d Electronic States and Mn-Te Local Coordination" Proceedings of the 7th International Conference on X-Ray Absorption Fine Structure (Kobe 1992).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Y.Ueda,K.Nishihara,K.Mimura Y.Hari,M.Taniguchi and M.Fujisawa: "Performance of Inverse Photoemission Spectrometer with A New Bardpass Photon Detector and High Sersitivity." Nucl,Instrum.& Methods. (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] K.Yokoyama.K.Nishihara,K.Mimura,Y.Hori,M.Taniguchi and M.Fujisawa: "Bondpass Photon Detector for Inverse Photoemission Spectroscopy." Rev.Sci.Instrum.(1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] M.Taniguchi,K.Soda I.Souma and Y.Oka: "Electronic Structure of Zr_<1-x>Mn_xTe" Phys,Rev.B15. 46. 15789-15794 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] N.Happo,H.Sato,S.Hosokawa Y.Ueda and M.Taniguchi: "EXAFS Study of Semimagnetic Semiconductors Zn_<1-x>Mn_xTe Mn3d Electronic States and Mn-Te Local Coordination" Proceedings of the 7th International Conference on X-Ray Absorption Structure(Kobe). (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] T.Takabatake,S.Miyata,H.Fujii,K.Yokoyama and M.Taniguchi: "Photoemission Study of The Uranium Ternary Compounds U_3T_3X_4(T=Ni,Cu,X=Sn,Sb)" Solid State Commun.80. (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] S.J.Oh,S.Suga,Y.Saito,A.Kakizaki,T.Ishii,M.Taniguchi,A.Fujimori,T.Miyahara,H.Kato,A.Ochiai,T.Suzuki and T.Kasuya: "Photoemission and BIS Study of Ce_4Bi_3 and CeBi_<0.7>Te_<0.3>" Solid State Commun.

    • Related Report
      1991 Annual Research Report
  • [Publications] M.Taniguchi,K.Soda,I.Souma and Y.Oka: "Electronic Structure of Zn_<1-x>Mn_xTe" Phys.Rer.B15.

    • Related Report
      1991 Annual Research Report
  • [Publications] K.Yokoyama,K.Nishihara,K.Mimura,Y.Hari,M.Taniguchi,Y.Ueda and M.Fujisawa: "Bandpass Photon Detector for Inverse Photoemission Spectoscopy" Reu.Sci.Instrum.

    • Related Report
      1991 Annual Research Report
  • [Publications] N.Happo,K.Nishihara,A.Yoshimoto,M.Taniguchi,T.Ueda and M.Koyama: "Photoemission and Inverse Photoemission Study of Cd_<1-x>Mn_xTe Formed on CdTe(110)Surface" Phys.Reu.B15.

    • Related Report
      1991 Annual Research Report
  • [Publications] M.Taniguchi,Y.Ueda,I.Morisada,Y.Murashita,T.Ohta,I.Souma and Y.Oka: "Synchrotron Radiation Study of Fe 3d States in Cd_<1ーx>Fe_xSe(0【less than or equal】x【less than or equal】 " Physical Review B. 41. 3069-3073 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] M.Taniguchi,K.Soda,I.Souma and Y.Oka: "Electronic Structure of Zn_<1ーx>Mn_xTe" Physical Review B.

    • Related Report
      1990 Annual Research Report

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Published: 1990-04-01   Modified: 2016-04-21  

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