The valence‐band offset controversy in HgTe/CdTe superlattices can be simply resolved by showing, as we do here, that a large offset value (Λ>300 meV) is indeed consistent with the magneto‐optical data of Berroir et al. [Phys. Rev. B 34, 891 (1986)]. The superlattice (100 Å HgTe/36 Å CdTe) becomes semimetallic (SM) when Λ is increased from small values, but reverts to semiconducting (SC) behavior for Λ>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.
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Research Article| March 01 1989
A possible resolution of the valence‐band offset controversy in HgTe/CdTe superlattices
P. M. Hui;
P. M. Hui, H. Ehrenreich, N. F. Johnson; A possible resolution of the valence‐band offset controversy in HgTe/CdTe superlattices. J. Vac. Sci. Technol. A 1 March 1989; 7 (2): 424–426. https://doi.org/10.1116/1.576196
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