Electron-mass anisotropy in type-III HgZnTe-CdTe superlattices
- 24 April 1989
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 62 (17) , 2024-2027
- https://doi.org/10.1103/physrevlett.62.2024
Abstract
Cyclotron-resonance experiments done in a novel superlattice, HgZnTe-CdTe, provide the first determination of the conduction-band dispersion in a type-III superlattice. The measured electron-mass anisotropy is strongly dependent on the CdTe layer thickness, in agreement with band-structure and Landau-level calculations. These calculations show also that the studied superlattices are semimetallic, consistent with the large valence-band offset (300 meV). Another cyclotron-resonance transition is observed, evidencing strongly the formation of a two-dimensional electron gas.Keywords
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