Energy relaxation of quantum dot hot electrons in hybrid quantum dot - Bose-Einstein condensate system

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Abstract

The theory of electron energy relaxation in a hybrid structure consisting of quantum dot interacting with a two dimensional exciton gas in Bose-Einstein condensate (BEC) regime is developed. A new type of the relaxation mechanism in the presence of BEC is introduced and theoretically analyzed. It is shown that, in the first order of electron-exciton interaction, two microscopic processes of energy relaxation appear. The first one is related to the emission of a single Bogoliubov excitation (bogolon) by an electron, whereas the second process is associated with the emission of two bogolons. It is shown that the second type processes dominate in the QD electron energy relaxation.

Original languageEnglish
Article number435301
JournalJournal of Physics Condensed Matter
Volume33
Issue number43
DOIs
Publication statusPublished - Oct 2021

Keywords

  • bogolon
  • Bose-Einstein condensate
  • electron-exciton interaction
  • energy relaxation
  • quantum dot

OECD FOS+WOS

  • 2.05 MATERIALS ENGINEERING
  • 1.03 PHYSICAL SCIENCES AND ASTRONOMY

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