Many-particle effects in optical transitions from zero-mode Landau levels in HgTe quantum wells Auteur(s): Krishtopenko S., Kadykov A., Gebert S., Ruffenach S., Consejo C., Torres Jeremie, Avogadri C., Jouault B., Knap W., Mikhailov N. N., Dvoretskii S. A., Teppe F. (Article) Publié: Physical Review B, vol. 102 p.041404 (2020) Texte intégral en Openaccess : Ref HAL: hal-02919862_v1 Ref Arxiv: 1912.04818 DOI: 10.1103/PhysRevB.102.041404 WoS: WOS:000554410600001 Ref. & Cit.: NASA ADS Exporter : BibTex | endNote Résumé: 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 electron-like and hole-like 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. |