UNSPECIFIED (1991) DIFFUSION THERMOPOWER OF A 2DEG. [Journal Item]

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Abstract

We investigate the effect of the background impurity concentration N(BI) on the thermopower of a GaAs/AlGaAs heterojunction. A comparison between a GaAs/AlGaAs heterojunction and a Si MOSFET is also given. For the heterojunction we always find a negative sign for the thermopower, in contrast to the Si MOSFET for which the sign sometimes changes with increasing N(BI). This different behaviour is due to the difference of the confining potentials of the two systems.

Item Type:	Journal Item
Subjects:	Q Science > QC Physics
Journal or Publication Title:	JOURNAL OF PHYSICS-CONDENSED MATTER
Publisher:	IOP PUBLISHING LTD
ISSN:	0953-8984
Date:	15 April 1991
Volume:	3
Number:	15
Number of Pages:	6
Page Range:	pp. 2597-2602
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/22755

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