Electric-field effects on finite-length superlattices
Date
1992
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Source Title
Physical Review B
Print ISSN
1631829
Electronic ISSN
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Volume
46
Issue
12
Pages
7621 - 7626
Language
English
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Abstract
In this paper, we study the Wannier-Stark ladder by carrying out numerical calculations on a multiple-quantum-well structure under an applied electric field. The variation in the Wannier-Stark-ladder energies and the degree of localization of the corresponding wave function are examined over a wide range of values of the applied electric field. Our results show that the Wannier-Stark ladder does exist for a finite, but periodic system that consists of a large number of quantum wells having a multiple-miniband structure. © 1992 The American Physical Society.