Electron–Hole Plasma-Induced Dephasing in Transition Metal Dichalcogenides

Josefine Neuhaus, Tineke Stroucken, Stephan W. Koch

Research output: Contribution to journalArticlepeer-review

Abstract

Electron–hole plasma-induced dephasing and its influence on the excitonic absorption and the degenerate four-wave mixing spectra in monolayer transition metal dichalcogenides are investigated. A systematic microscopic theory is presented that combines density functional calculations for the linear material properties with a many-body equation of motion approach for the optical response. Numerical results are obtained for the example of an hBN-encapsulated layer of (Formula presented.). It is shown that the influence of the excitation-induced dephasing depends only weakly on the exact shape of the carrier distribution for small densities, whereas distribution details become more important with increasing density.

Original languageEnglish (US)
Article number2100391
JournalPhysica Status Solidi - Rapid Research Letters
Volume15
Issue number11
DOIs
StatePublished - Nov 2021
Externally publishedYes

Keywords

  • excitation-induced dephasing
  • excitonic absorption
  • four-wave mixing
  • many-body theory
  • transition metal dichalcogenides

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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