Models of coherent exciton condensation

P B Littlewood, P R Eastham, Jonathan Mark James Keeling, F M Marchetti, M H Szymanska

Research output: Contribution to journalArticlepeer-review

100 Citations (Scopus)

Abstract

That excitons in solids might condense into a phase-coherent ground state was proposed about 40 years ago, and has been attracting experimental and theoretical attention ever since. Although experimental confirmation has been hard to come by, the concepts released by this phenomenon have been widely influential. This tutorial review discusses general aspects of the theory of exciton and polariton condensates, focusing on the reasons for coherence in the ground state wavefunction, the BCS to Bose crossover(s) for excitons and for polaritons, and the relationship of the coherent condensates to standard lasers.

Original languageEnglish
Pages (from-to)3597-3620
Number of pages24
JournalJournal of Physics: Condensed Matter
Volume16
Issue number35
DOIs
Publication statusPublished - 8 Sept 2004

Keywords

  • ELECTRON-HOLE GAS
  • BOSE-EINSTEIN CONDENSATION
  • QUANTUM-WELL STRUCTURES
  • SEMICONDUCTOR MICROCAVITY
  • GROUND-STATE
  • PHASE-TRANSITIONS
  • POTENTIAL TRAPS
  • SYSTEM
  • SUPERCONDUCTIVITY
  • IMPURITIES

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