Observation of Esaki-Tsu negative differential velocity in GaAs/AlAs superlattices
- 1 January 1990
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 64 (1), 52-55
- https://doi.org/10.1103/physrevlett.64.52
Abstract
The perpendicular peak velocity and critical field have been measured in a series of GaAs/AlAs superlattices as a function of the miniband width and miniband position relative to the AlAs X confined levels. The data cannot be explained by the electric-field localization mechanism [R. Tsu and G. Döhler, Phys. Rev. B 12, 680 (1975)] in the range of superlattice parameters investigated, but is qualitatively understood in terms of electron acceleration within the miniband [L. Esaki and R. Tsu, IBM J. Res. Develop. 14, 61 (1970)].This publication has 15 references indexed in Scilit:
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