Phase diagram of microcavity polariton condensates with a harmonic potential trap

Ting Wei Chen, Ming Dar Wei, Szu Cheng Cheng, Wen Feng Hsieh

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

We theoretically explore the phase transition in inhomogeneous exciton-polariton condensates with variable pumping conditions. Through Bogoliubov excitations to the radial-symmetric solutions of complex Gross-Pitaevskii equation, we determine not only the bifurcation of stable and unstable modes by the sign of fluid compressibility but also two distinct stable modes which are characterized by the elementary excitations and the stability of singly quantized vortex. One state is the quasi-condensate BKT phase with Goldstone flat dispersion; the other state is the localized-BEC phase which exhibits linear-type dispersion and has an excitation energy gap at zero momentum.

Original languageEnglish
Pages (from-to)23-27
Number of pages5
JournalSolid State Communications
Volume178
DOIs
Publication statusPublished - 2014

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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