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

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 Condensed Matter (1978-1997), vol. 102 p.041404 (2020)
Texte intégral en Openaccess : arxiv

Ref HAL: hal-02919862_v1
DOI: 10.1103/PhysRevB.102.041404
WoS: WOS:000554410600001
Exporter : BibTex | endNote

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.