Many-particle effects in optical transitions from zero-mode Landau levels in HgTe quantum wells

S. S. Krishtopenko, A. M. Kadykov, S. Gebert, S. Ruffenach, C. Consejo, J. Torres, C. Avogadri, B. Jouault, W. Knap, N. N. Mikhailov, S. A. Dvoretskii, F. Teppe

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2 Citations (Scopus)

Abstract

We report on the far-infrared magnetospectroscopy of HgTe quantum wells with inverted band ordering at different electron concentrations. We particularly focus on optical transitions from zero-mode Landau levels, which split from the edges of electronlike and holelike bands. We observe a pronounced dependence of the transition energies on the electron concentration varied by persistent photoconductivity effect. This is striking evidence that in addition to the already well-documented crystalline and interface asymmetries, electron-electron interactions also have a significant impact on the usual behavior of the optical transitions from zero-mode Landau levels.

Original languageEnglish
Article number041404
Number of pages6
JournalPhysical Review B
Volume102
Issue number4
DOIs
Publication statusPublished - 15 Jul 2020

Keywords

  • CYCLOTRON-RESONANCE
  • PHOTOCONDUCTIVITY
  • INSULATOR
  • STATES

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