This article is cited in 7 papers

Electronic properties of semiconductors

Effect of phonon drag on the thermopower in a parabolic quantum well

Kh. A. Hasanov^a, J. И. Huseynov^a, V. V. Dadashova^b, F. F. Aliev<sup>c

a</sup> N. Tusi Azerbaijan State Pedagogical University, Baku, Azerbaijan
^b Baku State University
^c Abdullaev Institute of Physics, National Academy of Sciences of Azerbaijan, Baku, Azerbaijan

Abstract: The theory of phonon-drag thermopower resulting from a temperature gradient in the plane of a two-dimensional electron gas layer in a parabolic quantum well is developed. The interaction mechanisms between electrons and acoustic phonons are considered, taking into account potential screening of the interaction. It is found that the effect of electron drag by phonons makes a significant contribution to the thermopower of the two-dimensional electron gas. It is shown that the consideration of screening has a significant effect on the drag thermopower. For the temperature dependence of the thermopower in a parabolic GaAs/AlGaAs quantum well in the temperature range of 1–10 K, good agreement between the obtained theoretical results and experiments is shown.

Keywords: Azerbaijan, Acoustic Phonon, Phonon Drag, Parabolic Quantum, Surface Electron Density.

Received: 09.07.2015
Accepted: 23.07.2015

 English version: Semiconductors, 2016, 50:3, 295–298

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