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Diffusion thermopower of the two-dimensional electron gas in GaN single quantum wells

✍ Scribed by A. Ghosal; D. Chattopadhyay

Publisher
Elsevier Science
Year
2009
Tongue
English
Weight
502 KB
Volume
149
Category
Article
ISSN
0038-1098

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✦ Synopsis

Diffusion thermopower (S d ) of the two-dimensional (2D) electron gas in GaN single quantum wells is calculated in the temperature range 1 K-12 K using the Fermi-Dirac distribution function. Scattering of carriers through acoustic phonons via deformation potential and piezoelectric couplings, and through background and remote ionized impurities is included. S d is found to decrease with temperature and the 2D electron concentration, and is primarily controlled by deformation potential acoustic scattering. The dependence of S d on the well width and the ionized impurity concentration is found to be quite weak.

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