Heating of a two-dimensional electron gas by the electric field of a surface acoustic wave

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dc.creatorDrichko, I. L.
dc.creatorD'yakonov, A. M.
dc.creatorKagan, V. D.
dc.creatorKreshchuk, A. M.
dc.creatorPolyanskaya, T. A.
dc.creatorSavel'ev, I. G.
dc.creatorSmirnov, I. Yu.
dc.creatorSuslov, A. V.
dc.date1998-02-21
dc.date1998-03-04
dc.date.accessioned2026-07-07T03:10:00Z
dc.date.available2026-07-07T03:10:00Z
dc.descriptionThe heating of a two-dimensional electron gas by an rf electric field generated by a surface acoustic wave, which can be described by an electron temperature $T_e$, has been investigated. It is shown that the energy balance of the electron gas is determined by electron scattering by the piezoelectric potential of the acoustic phonons with $T_e$ determined from measurements at frequencies $f$= 30 and 150 MHz. The experimental curves of the energy loss $Q$ versus $T_e$ at different SAW frequencies depend on the value of $ω\barτ_ε$, compared to 1, where $ \bar τ_ε$ is the relaxation time of the average electron energy. Theoretical calculations of the heating of a two-dimensional electron gas by the electric field of the surface acoustic wave are presented for the case of thermal electrons ($ΔT \ll T$). The calculations show that for the same energy losses $Q$ the degree of heating of the two-dimensional electrons (i.e., the ratio $T_e/T$) for $ω\barτ_ε>1$ ($f$= 150 MHz) is less than for $ω\barτ_ε<1$ ($f$=30 MHz). Experimental results confirming this calculation are presented.
dc.descriptionsome technical corrections for pictures were made
dc.identifierhttps://arxiv.org/abs/cond-mat/9802231
dc.identifierhttp://arxiv.org/abs/cond-mat/9802231
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/28110
dc.subjectMesoscale and Nanoscale Physics
dc.titleHeating of a two-dimensional electron gas by the electric field of a surface acoustic wave
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