Possible resolution of the valence-band offset controversy in HgTe/CdTe superlattices
Journal Article
·
· J. Vac. Sci. Technol., A; (United States)
The valence-band offset controversy in HgTe/CdTe superlattices can be simply resolved by showing, as we do here, that a large offset value (..lambda..>300 meV) is indeed consistent with the magneto-optical data of Berroir et al. (Phys. Rev. B 34, 891 (1986)). The superlattice (100 A HgTe/36 A CdTe) becomes semimetallic (SM) when ..lambda.. is increased from small values, but reverts to semiconducting (SC) behavior for ..lambda..>300 meV. The band gap in this new regime occurs at the superlattice Brillouin zone face. The sensitivity to layer thicknesses of such SC..-->..SM..-->..SC transitions is discussed and experiments suggested.
- Research Organization:
- Division of Applied Sciences, Harvard University, Cambridge, Massachusetts 02138
- OSTI ID:
- 6445449
- Journal Information:
- J. Vac. Sci. Technol., A; (United States), Journal Name: J. Vac. Sci. Technol., A; (United States) Vol. 7:2; ISSN JVTAD
- Country of Publication:
- United States
- Language:
- English
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