Microscopic interface asymmetry and spin splitting of electron subbands in semiconductor quantum structures

DOI to cite this document:: 10.5283/epub.1346

Rössler, Ulrich ; Kainz, Josef

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Date of publication of this fulltext: 05 Aug 2009 13:27

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Abstract

The microscopic interface asymmetry of (001)-grown semiconductor heterostructures that gives rise to heavy-light hole coupling even at zero in-plane wave vector k||, modifies also the subband dispersion of confined electrons. Starting from a multiband envelope formulation we apply matrix perturbation theory to derive explicit expressions caused by this interface asymmetry, which in the 2×2 ...