Thermal generation of shift electric current

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Abstract

It is shown that the dissipation of energy in an electron gas confined in a quantum well made of non-centrosymmetric crystal leads to a direct electric current. The current originates from the real-space shift of the wave packets of Bloch electrons at the electron scattering by phonons, which tends to restore thermal equilibrium between the electron and phonon subsystems. We develop a microscopic theory of such a phonogalvanic effect for narrow band gap zinc-blende quantum wells.

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Budkin, G. V., & Tarasenko, S. A. (2020). Thermal generation of shift electric current. New Journal of Physics, 22(1). https://doi.org/10.1088/1367-2630/ab64af

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