Interface localized states in coupled superlattices
作者:
G. Ihm,
S. K. Noh,
M. L. Falk,
K. Y. Lim,
期刊:
Journal of Applied Physics
(AIP Available online 1992)
卷期:
Volume 72,
issue 11
页码: 5325-5328
ISSN:0021-8979
年代: 1992
DOI:10.1063/1.352356
出版商: AIP
数据来源: AIP
摘要:
A method of evaluating interface states for coupled superlattices has been developed. Explicit solutions for these states have been obtained within the framework of the Kronig–Penney model for the case of two semiconductor superlattices coupled by a tunnel barrier. The interface states are shown to be largely dependent on the coupling strength if the constituent superlattices have identical structure parameters, while insensitive to the tunnel barrier thickness if their structure parameters differ. In the latter case, electrons behave as if the system were composed of two decoupled semi‐infinite superlattices.
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