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

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

2010-11-23

arxiv.org/abs/1011.5233v1

Phys. Rev. B 83, 115307 (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 4 figures

Scientific paper

10.1103/PhysRevB.83.115307

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.

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