Spin-splitting of electron subbands in semiconducting films with a variable band gap

We investigate size-quantized electron states in a film (quantum well) with a variable band gap, based on compounds of Pb 1− x Sn x Se type. It is shown that an asymmetric modulation of the gap width in the direction of the growth of the film generally leads to spin-splitting of electron subbands. W...

Full description

Saved in:

Bibliographic Details
Published in:	Physics letters. A Vol. 369; no. 1; pp. 140 - 145
Main Authors:	Joe, Yong S., Isaev, Leonid S., Satanin, Arkady M.
Format:	Journal Article
Language:	English
Published:	Elsevier B.V 10-09-2007
Subjects:	Lead salts Quantum effects Semiconducting films Lead salts Quantum effects Semiconducting films 71.28.+d 72.25.Dc 71.70.Ej 73.21.Fg
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	We investigate size-quantized electron states in a film (quantum well) with a variable band gap, based on compounds of Pb 1− x Sn x Se type. It is shown that an asymmetric modulation of the gap width in the direction of the growth of the film generally leads to spin-splitting of electron subbands. We discuss the influence of surface properties on the magnitude of the electron's spontaneous polarization. Finally, we point out some peculiar degeneracies of the spectrum, caused by particular boundary conditions.
ISSN:	0375-9601 1873-2429
DOI:	10.1016/j.physleta.2007.04.064