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

Article

关键词: CYCLOTRON-RESONANCE;    PHOTOCONDUCTIVITY;    INSULATOR;    STATES;   

DOI  :  10.1103/PhysRevB.102.041404

来源: SCIE

【 摘 要 】

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.

【 授权许可】

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