Exciton-mott physics in a quasi-one-dimensional electron-hole system

Takuya Yoshioka, Kenichi Asano

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

We investigate the correlation effect in the quasi-one-dimensional electron-hole (e-h) system under thermal equilibrium. A self-consistent screened T-matrix approximation developed here enables the description of an e-h pair under any ionization ratio, the portion of quasielectrons or quasiholes moving almost freely. Our phase diagram on the ionization ratio provides a unified description of exciton Mott physics from the low-density exciton gas towards the high-density electron-hole plasma, and predicts a first order transition at low temperature. The interband optical absorption-gain spectra are also evaluated, which succeeded in explaining semiquantitatively all aspects of the recent experimental observations in the strongly photoexcited quantum wires.

Original languageEnglish
Article number256403
JournalPhysical Review Letters
Volume107
Issue number25
DOIs
Publication statusPublished - 2011 Dec 16
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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