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Ground state description of bound polarons in parabolic quantum wires

  • Qinghu Chen
  • Yuhang Ren
  • Zhengkuan Jiao
  • Kelin Wang
Article

Abstract

The Feynman-Haken variational path integral theory is, for the first time, generalized to calculate the ground-state energy of an electron coupled simultaneously to a Coulomb potential and to a longitudinal-optical (LO) phonon field in parabolic quantum wires. It is shown that the polaronic correction to the ground-state energy is more sensitive to the electron-phonon coupling constant than the Coulomb binding parameter and monotonically stronger as the effective wire radius decreases. We apply our calculations to several semiconductor quantum wires and find that the polaronic correction can be considerably large.

PACS. 71.38.+i Polarons and electron-phonon interactions 63.20.Kr Phonon-electron and phonon-phonon interactions 

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Copyright information

© Società Italiana di Fisica, Springer-Verlag 1999

Authors and Affiliations

  • Qinghu Chen
    • 1
  • Yuhang Ren
    • 1
  • Zhengkuan Jiao
    • 2
  • Kelin Wang
    • 3
  1. 1.CCAST (World Laboratory)BeijingP.R. China
  2. 2.Physics DepartmentZhejiang UniversityHangzhouP.R. China
  3. 3.Centre for Fundamental PhysicsUniversity of Science and Technology of ChinaHefeiP.R. China

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