TY - JOUR

T1 - Many-particle effects in optical transitions from zero-mode Landau levels in HgTe quantum wells

AU - Krishtopenko, S. S.

AU - Kadykov, A. M.

AU - Gebert, S.

AU - Ruffenach, S.

AU - Consejo, C.

AU - Torres, J.

AU - Avogadri, C.

AU - Jouault, B.

AU - Knap, W.

AU - Mikhailov, N. N.

AU - Dvoretskii, S. A.

AU - Teppe, F.

N1 - The authors gratefully thank M. Orlita for the helpful discussions and critical comments. This work was supported by the MIPS Department of Montpellier University through the "Occitanie Terahertz Platform,"MIPS Department of Montpellier University through the "Occitanie Terahertz Platform," by CNRS through IRP "TeraMIR," by the French Agence Nationale pour la Recherche (Colector project), and by the European Union through the Flag-Era JTC 2019-DeMeGras project and the ITN TeraApps -Marie Sklodowska-Curie Action (No. 765426) from Horizon 2020 Research and Innovation Programme.

PY - 2020/7/15

Y1 - 2020/7/15

N2 - 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.

AB - 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.

KW - CYCLOTRON-RESONANCE

KW - PHOTOCONDUCTIVITY

KW - INSULATOR

KW - STATES

UR - http://www.scopus.com/inward/record.url?scp=85093071964&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.102.041404

DO - 10.1103/PhysRevB.102.041404

M3 - Article

AN - SCOPUS:85093071964

VL - 102

JO - Physical Review B

JF - Physical Review B

SN - 2469-9950

IS - 4

M1 - 041404

ER -