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EXCITED STATES OF 3d-ELECTRON AND LATTICE RELAXATION IN SEMIMAGNETIC-SEMICONDUCTORS

Research Project

Project/Area Number 06452037
Research Category

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

Allocation TypeSingle-year Grants
Research Field 固体物性Ⅰ(光物性・半導体・誘電体)
Research InstitutionHOKKAIDO UNIVERSITY

Principal Investigator

NAKAHARA Junichiro  Hokkaido Univ., Grad.Sch. of Sci., Prof., 大学院理学研究科, 教授 (30013527)

Co-Investigator(Kenkyū-buntansha) YAMAMOTO Sekika  Hokkaido Univ., Grad.Sch. of Sci., Reas.Assoc., 大学院理学研究科, 助手 (50270781)
WATANABE Junji  Hokkaido Univ., Grad.Sch. of Sci., Assoc.Prof., 大学院理学研究科, 助教授 (60201191)
Project Period (FY) 1994 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥7,200,000 (Direct Cost: ¥7,200,000)
Fiscal Year 1995: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 1994: ¥5,700,000 (Direct Cost: ¥5,700,000)
KeywordsSemimagnetic Semiconductor / d-states / Excited States / Lattice Relaxation / Relaxd Process / Localized States / 格子緩和 / 局在・非局在 / 発光
Research Abstract

The energy shift of the Mn^<2+> photoluminescence peak according to excitation energy is observed at low temperatures. Using this shift we estimate inhomogeneou and homogeneous broadening of Mn^<2+> photoluminescence separately. In creasing temperatures inhomogeneous broadening changes its character to homogeneous one. Time profiles of infrared photoluminescence are investigated and their built up processes are explained using energy transfer from the extended states to localized states. High density effects of excited d-multiplet states of Mn^<2+> are investigated at 2K and nonexponential decay are observed at high density excitation. At the initial part of the decay profiles extra decay with short life time appear and its intensity increases. This effect is considered as the precursor effect of super flourescence or super radiance.

Report

(3 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • Research Products

    (11 results)

All Other

All Publications (11 results)

  • [Publications] J.Gregus, J.Nakahara, K.Takamura, J.Watanabe, K.Ando, H.Akinaga: "PHOTOLUMINESCENCE IN CdMnTe STRAINED FILMS" J.Phys.Chem.Solids. 56. 407-410 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] H.Kojima, H.Kayama, T.Kobayashi, K.Uchida, J.Nakahara: "Comparative Study of Photoluminescence in Ordered and Disordered GaInP Alloys under High Pressure" J.Phys.Chem.Solids. 56. 345-348 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] K.Takmura, D.J.Park, J.Gregus, J.nakahara: "Decay Process of Excited 3D Multiplet States with Large Lattice Relaxation" J.Cry.Res.Tech.(印刷中). (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] J.Gregus, J.Nakahara, K.Takamura, J.Watanabe, K.Ando, H.Akinaga: "PHOTOLUMINESCENCE IN CdMnTe STRAINED FILMS" J.Phys.Chem.Solids. 58. 407-410 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] H.Kojima, H.Kayama, T.Kobayashi, K.Uchida, J.Nakahara: "Comparative Study of Photoluminescence in Ordered and Disordered GaInP Alloys under High Pressure" J.Phys.Chem.Solids. 56. 345-348 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] K.Takmura, D.J.Park, J.Gregus, J.Nakahara: "Decay Process of Excited 3D Multiplet States with Large Lattice Relaxation" J.Cry.Res.Tech. (in press). (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] J.Gregus,J.Nakahara,K.Takamura,J.Watanabe,K.Ando,H.Akinaga: "PHOTOLUMINESCENCE IN CdMnTe STRAINED FILMS" J.Phys.Chem.Solids. 56. 407-410 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] H.Kojima,H.Kayama,T.Kobayashi K.Uchida,J.Nakahara: "Comparative Study of Photoluminescence in Ordered and Disordered GaInP Alloys under High Pressure" J.Phys.Chem.Solids. 56. 345-348 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] K.Takmura,D.J.Park,J.Gregus J.Nakahara: "Decay Process of Excited 3D Multiplet States with Large Lattice Relaxation" J.Cry.Res.Tech.(印刷中). (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] J.Gregus,J.Nakahara,K.Takamura,J.Watanabe,K.Ando,H.Akinaga: "PHOTOLUMINESCENCE IN CdMnTe STRAINED FILMS" J.Phys.Chem.Solids. ?1-?4 (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] H.Kojima,H.Kayama,T.Kobayashi,K.Uchida,J.Nakahara: "Comparative Study of Photoluminescence in Ordered and Disordered GaInP Alloys under High Pressure" J.Phys.Chem.Solids. (1995)

    • Related Report
      1994 Annual Research Report

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Published: 1994-04-01   Modified: 2020-05-15  

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