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Miniband transport in a two-dimensional superlattice

✍ Scribed by P. Kleinert; V.V. Bryskin

Publisher: Elsevier Science
Year: 1997
Tongue: English
Weight: 111 KB
Volume: 22
Category: Article
ISSN: 0749-6036
DOI: 10.1006/spmi.1997.0461

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✦ Synopsis

A microscopic theory is presented for high-field miniband transport in a two-dimensional superlattice. The energy transfer to the lateral electron motion is taken into account as well as scattering on polar optical phonons. Oscillatory current anomalies appear when the optical phonon frequency is a multiple of the Bloch frequency. The current oscillations, which are due to Wannier-Stark localization, are much more pronounced in a two-dimensional than in a three-dimensional system with a superlattice structure in one direction.

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