Crossover from excitons to an electron-hole plasma in a high-quality single T-shaped quantum wire

Masahiro Yoshita, Yuhei Hayamizu, Hidefumi Akiyama, Loren N. Pfeiffer, Ken W. West

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We studied evolution of photoluminescence (PL) spectral with increasing excitation powers in an unprecedentedly high-quality quantum wire. The PL spectra obtained suggest that the transition from excitons to a dense electron-hole (e-h) plasma in the wire is a gradual crossover via bi-excitons. We also found that the continuum band edge of excitons shows no energy shift with increasing e-h densities and never crosses to the low-energy edge of the plasma PL at higher e-h densities, which is in contrast to a prevailing picture of the exciton Mott transition.

Original languageEnglish (US)
Title of host publicationPHYSICS OF SEMICONDUCTORS
Subtitle of host publication27th International Conference on the Physics of Semiconductors, ICPS-27
Pages885-886
Number of pages2
DOIs
StatePublished - Jun 30 2005
Externally publishedYes
EventPHYSICS OF SEMICONDUCTORS: 27th International Conference on the Physics of Semiconductors, ICPS-27 - Flagstaff, AZ, United States
Duration: Jul 26 2004Jul 30 2004

Publication series

NameAIP Conference Proceedings
Volume772
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

ConferencePHYSICS OF SEMICONDUCTORS: 27th International Conference on the Physics of Semiconductors, ICPS-27
Country/TerritoryUnited States
CityFlagstaff, AZ
Period7/26/047/30/04

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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