Influence of acoustic phonons on inter-subband scattering in GaAs-GaAlAs heterojunctions

1 October 1989

journal article
Published by IOP Publishing in Semiconductor Science and Technology

Vol. 4 (10) , 885-888
https://doi.org/10.1088/0268-1242/4/10/010

Abstract

Shubnikov-deHaas measurements on GaAs-GaAlAs heterojunctions with two occupied subbands are presented, which show that at intermediate temperatures, 1<T<4 K, the oscillations resulting from different subbands can be multiplicative, as opposed to the simple addition which occurs below 1 K. This behaviour is attributed to acoustic phonon mediated inter-subband scattering.

Keywords

OSCILLATIONS

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