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

Theoretical Study of Optical Properties in Mott Insulating Cuprates

Research Project

Project/Area Number 16540302
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Condensed matter physics II
Research InstitutionTohoku University

Principal Investigator

TOHYAMA Takami  Tohoku University, Institute for Materials Research, Associate Professor, 金属材料研究所, 助教授 (70237056)

Project Period (FY) 2004 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥3,200,000 (Direct Cost: ¥3,200,000)
Fiscal Year 2005: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 2004: ¥2,000,000 (Direct Cost: ¥2,000,000)
KeywordsMott insulator / Hubbard model / Optical response / Exact diagonalization method / Density matrix renormalization method / Electron-phonon interaction / Two-photon photoemission / ニ光子光電子分光
Research Abstract

Charge gap in the Mott insulator originates from strong electron correlation. Therefore, we expect optical responses that are different from those in the band insulator. In this project, we theoretically examine photoexcitaed states and optical properties in insulating copper oxides that are typical Mott insulators by using a half-filled Hubbard model and its effective model. We use the numerically exact diagonalization technique and the dynamical version of density-matrix renormalization method to calculate optical responses of the models.
We obtained several new results that are related to issue of 1)excitonic effects on the optical response in the one-dimensional two-band Hubbard model at half filling, 2)theoretical prediction of angle-resolved two-photon photoemission in two-dimensional insulating cuprates in order to clarify unoccupied states above the Fermi level, 3)temperature dependence of spinon and holon excitations seen in the single-particle spectral function of one-dimensional Mott insulators, 4)the symmetry of magnetic exciton in the photoexcited states of two-dimensional Mott insulators, and 5)the effect of electron-phonon interaction on the single-particle spectral function of one-dimensional Mott insulators. We note that The topics from 1) to 4) have been summarized and published in journals like the Physical Review B, and the topic 5) is submitted to a journal.

Report

(3 results)
  • 2005 Annual Research Report   Final Research Report Summary
  • 2004 Annual Research Report
  • Research Products

    (12 results)

All 2006 2005 2004

All Journal Article (11 results) Book (1 results)

  • [Journal Article] Symmetry of Photoexcited States and Large-Shift Raman Scattering in Two-Dimensional Mott Insulators2006

    • Author(s)
      T.Tohyama
    • Journal Title

      Journal of the Physical Society of Japan 75・3

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] Symmetry of photoexcited states and large-shift Raman scattering in two-dimensional Mott insulators2006

    • Author(s)
      T.Tohyama
    • Journal Title

      Journal of the Physical Society of Japan 75・3

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Excitonic effect on the optical response in the one-dimensional two-band Hubbard model2005

    • Author(s)
      H.Matsueda
    • Journal Title

      Physical Review B 71

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] Theoretical study of angle-resolved two-photon photoemission in two-dimensional insulating cuprates2005

    • Author(s)
      H.Onodera
    • Journal Title

      Physical Review B 72

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] Temperature dependence of spinon and holon excitations in one-dimensional Mott insulators2005

    • Author(s)
      H.Matsueda
    • Journal Title

      Physical Review B 72

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] Excitonic effect on the optical response in the one-dimensional two-band Hubbard model2005

    • Author(s)
      H.Matsueda, T.Tohyama, S.Maekawa
    • Journal Title

      Physical Review B 71

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Theoretical study of angle-resolved two-photon photoemission in two-dimensional insulating cuprates2005

    • Author(s)
      H.Onodera, T.Tohyama, K.Tsutsui, S.Maekawa
    • Journal Title

      Physical Review B 72

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Temperature dependence of spinon and holon excitations in one-dimensional Mott insulators2005

    • Author(s)
      H.Matsueda, N.Bulut, T.Tohyama, S.Maekawa
    • Journal Title

      Physical Review B 72

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Physics of Transition Metal Oxides2004

    • Author(s)
      S.Maekawa, T.Tohyama et al.
    • Journal Title

      Springer Series in Solid-State Sciences Vol.144

      Pages: 337-337

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Temperature and dimensionality dependences of optical absorption spectra in Mott insulators2004

    • Author(s)
      H.Onodera
    • Journal Title

      Physical Review B 69

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Dynamical density matrix renormalization group study of photoexcited states in one-dimensional Mott insulators2004

    • Author(s)
      H.Matsueda
    • Journal Title

      Physical Review B 70

    • Related Report
      2004 Annual Research Report
  • [Book] Physics of Transition Metal Oxides2004

    • Author(s)
      S.Maekawa 他
    • Total Pages
      337
    • Publisher
      Springer
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary

URL: 

Published: 2004-04-01   Modified: 2020-05-15  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi