• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Many-Body Effect and Cooperative Phenomena in High-Density Exciton Systems Driven by Light

Research Project

Project/Area Number 11215206
Research Category

Grant-in-Aid for Scientific Research on Priority Areas (B)

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionNARA INSTITUTE OF SCIENCE AND TECHNOLOGY

Principal Investigator

AIHARA Masaki  Nara Institute of Science and Technology Graduate School of Materials Science, Professor, 物質創成科学研究科, 教授 (70091163)

Co-Investigator(Kenkyū-buntansha) INAGAKI Takeshi  Nara Institute of Science and Technology Graduate School of Materials Science, Research Associate, 物質創成科学研究科, 助手 (10253139)
TAKAHASHI Akira  Nara Institute of Science and Technology Graduate School of Materials Science, Associate Professor, 物質創成科学研究科, 助教授 (80212009)
Project Period (FY) 1999 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥17,100,000 (Direct Cost: ¥17,100,000)
Fiscal Year 2001: ¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2000: ¥11,900,000 (Direct Cost: ¥11,900,000)
Fiscal Year 1999: ¥1,800,000 (Direct Cost: ¥1,800,000)
KeywordsExciton / Bose-Einstein condensation / Macroscopic quantum state / Electron correlation / Superconductivity / BCS state / Eliashberg方程式 / 非線形光学 / コヒーレンス / シュレディンガー方程式
Research Abstract

We have presented for the first time the unified theory of luminescence spectra for highly excited electron-hole systems which is applicable both to the electron-hole BCS state and to the exciton BEC state. The multiple Coulomb interaction between electron-hole pairs is taken into account by numerically solving the Bethe-Salpeter equation for electron-hole pair correlation function. The effect of the collective quantum fluctuation associtated with the center-of-mass motion of electron-hole pairs is incorporated by the generalized random-phase approximation. The crossover from the exciton BEC to the electron-hole BCS state clearly manifests itself in the calculated luminescence spectra.
We have also investigated photo-generated states in strongly correlated electron systems. We have derived the effective Hamiltonian of the Hubbard model for the multi-photon excited states assuming sufficiently large on-site repulsive Coulomb interaction. We have calculated two-photon excited states for a system with 20 sites in the half-filled case with exactly diagonalizing the effective Hamiltonian. We have found that the correlation function for the d-wave superconductivity has finite values even for large distance. This strongly suggests that the photo-induced superconductivity arises in strongly correlated electron systems.

Report

(4 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • 1999 Annual Research Report
  • Research Products

    (31 results)

All Other

All Publications (31 results)

  • [Publications] T.J.Inagaki, M.Aihara: "Nonlinear Optical Response by Spatially Separated Light Beams in a Condensed Exciton System"Journal of Luminescence. 87-89. 856-858 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T.J.Inagaki, M.Aihara, A.Takahashi: "Theory of the Luminescence Spectra of High-Density Electron-Hole Systems:Crossover from Excitonic Bose-Einstein Condensation to Electron-Hole BCS state"Solid State Communications. 115. 645-650 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T.J.Inagaki, T.Iida, M.Aihara: "Many-body theory of pump-probe spectra for highly excited semiconductors"Physical Review B. 62. 10852-10860 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T.J.Inagaki, M.Aihara: "Propagation properties of high-density exciton polaritons"Excitonic Processes in Condensed Matter(edited by K.Cho and A.Matsui,World Scientific). 453-456 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T.J.Inagaki, M.Aihara: "Pump-probe spectroscopy by infrared probe light in highly excited semiconductors:Beyond the BCS-like mean-field analysis"Proceedings of 25th International Conference on the Physics of Semiconductor,(edited by N.Miura and T.Ando,Springer Verlag). 107-108 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T.J.Inagaki, M.Aihara: "Infrared absorption and reflection spectra of high-density electron-hole systems"Journal of Luminescence. 94-95. 533-536 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] M.Ando, T.J.Inagaki, Y.Kanemitsu, T.Kushida, K.Maehashi, Y.Murase, H.Nakashima: "Photoluminescence properties of highly-excited CdSe quantum dots"Journal of Luminescence. 94-95. 403-406 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] A Takahashi, H.Gomi, M.Aihara: "Multi-photon excited states of two-dimensional strongly correlated electron systems"Journal of Luminescence. 94-95. 499-502 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] A.Takahashi, S.Yoshikawa, M.Aihara: "Multi-photon excited states of two-dimensional strongly correlated electron systems"Physical Review B. (印刷中). (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T.J.Inagaki, M.Aihara: "Many-body theory for luminescence spectra in high-density electron-hole systems"Physical Review B. (印刷中). (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T. J. Inagaki and M. Aihara: "Nonlinear Optical Response by Spatially Separated Light Beams in a Condensed Exciton System"Journal of Luminescence. Vol. 87-89. 856-858 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T. J. Inagaki, M. Aihara, and A. Takahashi: "Theory of the Luminescence Spectra of High-Density Electron-Hole Systems : Crossover from Excitonic Bose-Einstein Condensation to Electron-Hole BCS state"Solid State Communications. Vol. 115. 645-650 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T. J. Inagaki, T. Iida, and M. Aihara: "Many-body theory of pump-probe spectra for highly excited semiconductors"Physical Review B. Vol. 62. 10852-10860 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T. J. Inagaki and M. Aihara: "Propagation properties of high-density exciton polaritons"Excitonic Processes in Condensed Matter (edited by K. Cho and A. Matsui, WorldScientific). 453-456 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T. J. Inagaki and M. Aihara: "Pump-probe spectroscopy by infrared probe light in highly excited semiconductors : Beyond the BCS-like mean-field analysis"Proceedings of 25th International Conference on the Physics of Semiconductor, (edited by N. Miura and T. Ando, Springer Verlag). 107-108 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T. J. Inagaki and M. Aihara: "Infrared absorption and reflection spectra of high-density electron-hole systems"Journal of Luminescence. Vol. 94-95. 533-536 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] M. Ando, T. J. Inagaki, Y. Kanemitsu, T. Kushida, K. Maehashi, Y. Murase and H. Nakashima: "Photoluminescence properties of highly-excited CdSe quantum dots"Journal of Luminescence. Vol. 94-95. 403-406 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] A Takahashi, H. Gomi and M. Aihara: "Multi-photon excited states of two-dimensional strongly correlated electron systems"Journal of Luminescence. Vol. 94-95. 499-502 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] A. Takahashi, S. Yoshikawa and M. Aihara: "Multi-photon excited states of two-dimensional strongly correlated electron systems"Physical Review B. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T. J. Inagaki and M. Aihara: "Many-body theory for luminescence spectra in high-density electron-hole systems"Physical Review B. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T.J.Inagaki, M.Aihara: "Nonlinear Optical Response by Spatially Separated Light Beams in a Condensed Exciton System"Journal of Luminescence. 87-89. 856-858 (2000)

    • Related Report
      2001 Annual Research Report
  • [Publications] T.J.Inagaki, M.Aihara, A.Takahashi: "Theory of the Luminescence Spectra of High-Density Electron-Hole Systems : Crossover from Excitonic Bose-Einstein Condensation to Electron-Hole BCS state"Solid State Communications. 115. 645-650 (2000)

    • Related Report
      2001 Annual Research Report
  • [Publications] T.J.Inagaki, T.Iida, M.Aihara: "Many-body theory of pump-probe spectra for highly excited semiconductors"Physical Review B. 62. 10852-10860 (2000)

    • Related Report
      2001 Annual Research Report
  • [Publications] T.J.Inagaki, M.Aihara: "Propagation properties of high-density exciton polaritons"Excitonic Processes in Condensed Matter(edited by K. Cho and A. Matsui, World Scientific). 453-456 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] T.J.Inagaki, M.Aihara: "T.J.Inagaki and M.Aihara"Journal of Luminescence. 94-95. 533-536 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] M.Ando, T.J.Inagaki, Y.Kanemitsu, T.Kushida, K.Maehashi, Y.Murase, H.Nakashima: "Photoluminescence properties of highly-excited CdSe quantum dots"Journal of Luminescence. 94-95. 403-406 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] T.J.Inagaki and M.Aihara: "Nonlinear Optical Response by Spatially Separated Light Beams in a Condensed Exciton System"Journal of Lumimescence. 87・89. 856-858 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] T.J.Inagaki,M.Aihara,and A.Takahashi: "Theory of the Luminescence Spectra of High-Density Electron-Hole Systems : Crossover from Excitonic Bose-Einstein Condensation to Electron-Hole BCS state"Solid State Communications. 115. 645-650 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] T.J.Inagaki,T.Iida,and M.Aihara: "Many-body theory of pump-probe spectra for highly excited semiconductors"Physical Review B. 62・16. 10852-10860 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] T.J.Inagaki and M.Aihara: "Propagation properties of exciton polaritons in highly excited semiconductors"International Journal of Modern Physics B. (掲載許可). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] T.J.Inagaki and M. Aihara: "Nonlinear optical response by spatially separated light beams in a condensed exciton system"Journal of Luminescnece. (in press). (2000)

    • Related Report
      1999 Annual Research Report

URL: 

Published: 1999-04-01   Modified: 2018-03-28  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi