Valence-Band-Offset Controversy in HgTe/CdTe Superlattices: A Possible Resolution
- 24 October 1988
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 61 (17) , 1993-1995
- https://doi.org/10.1103/physrevlett.61.1993
Abstract
The valence-band-offset controversy in HgTe/CdTe superlattices can be simply resolved. It is shown that, while the superlattice becomes semimetallic with increasing valence-band offset, it reverts to semiconducting behavior as the offset is increased yet further. The observed electron-cyclotron mass and the band gap can be better explained for the offset of 350 meV measured by photoemission than for the smaller offset ∼40 meV which coincidentally is also in fair agreement with the magneto-optical data.Keywords
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