Fine structure of "zero-mode" Landau levels in HgTe/HgCdTe quantum wells

Abstract

HgTe/HgCdTe quantum wells with the inverted band structure have been probed using far infrared magneto-spectroscopy. Realistic calculations of Landau level diagrams have been performed to identify the observed transitions. Investigations have been greatly focused on the magnetic field dependence of the peculiar pair of "zero-mode" Landau levels which characteristically split from the upper conduction and bottom valence bands, and merge under the applied magnetic field. The observed avoided crossing of these levels is tentatively attributed to the bulk inversion asymmetry of zinc blend compounds.

5 pages, 4 figures

References in corpus (5)

• Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
• Quantum Spin Hall Insulator State in HgTe Quantum Wells
• The Quantum Spin Hall Effect: Theory and Experiment
• Metal to insulator transition on the N = 0 Landau level in graphene
• Edge states in graphene in magnetic fields -- a speciality of the edge mode embedded in the n=0 Landau band

Cited by in corpus (6)

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• Landau level spectroscopy of PbSnSe topological crystalline insulator
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• Splitting of Dirac cones in HgTe quantum wells: Effects of crystallographic orientation, interface-, bulk-, and structure-inversion asymmetry
• Universal transparency and fine band structure near the Dirac point in HgTe quantum wells
• Many-particle hybridization of optical transitions from zero-mode Landau levels in HgTe quantum wells