Clustering of the electron-hole liquid

M. Saarela, T. Taipaleenmäki, F. V. Kusmartsev

Research output: Contribution to journalConference articlepeer-review

Abstract

Free excitons created in semi-metals and semiconductors under irradiation of light may condense into an electron-hole liquid when their density is large enough. This quantum phenomenon has been intensively studied theoretically and experimentally. The exciton gas undergoes Mott's metal insulator phase transition at much lower density. This mismatch between the critical value of the density for the instability of the free excitons and the threshold value of the density for the appearance of the electron-hole liquid stimulated a controversial dispute over a decade of what arises in the range of densities between these two critical values. We show that a new structural liquid consisting of the charged clusters can be formed where each cluster is like a molecule consisting of different numbers of electrons and holes.

Original languageBritish English
Pages (from-to)339-340
Number of pages2
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume18
Issue number1-3
DOIs
StatePublished - May 2003
Event23rd International Conference on Low Temperature Physics - Hiroshima, Japan
Duration: 20 Aug 200227 Aug 2002

Keywords

  • Clusters
  • Electron-hole liquid
  • Excitons
  • Phase diagram

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