The inelastic relaxation time due to electron-electron collisions in high-mobility two-dimensional systems under microwave radiations

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dc.creatorLei, X. L.
dc.creatorLiu, S. Y.
dc.date2005-06-14
dc.date.accessioned2026-07-07T03:05:35Z
dc.date.available2026-07-07T03:05:35Z
dc.descriptionIn some theoretical analyses of microwave-induced magnetoresistance oscillations in high-mobility two-dimensional systems, the "inelastic relaxation time" $τ_{in}$ due to electron-electron scattering is evaluated using an equilibrium distribution function $f^0$ in the absence of radiation, and it is concluded that $τ_{in}$ is much larger than $τ_{q}$, the single-particle relaxation time due to impurity scattering. However, under the irradiation of a microwave capable of producing magnetoresistance oscillation, the distribution function of the high-mobility electron gas deviates remarkably from $f^0$ at low temperatures. Estimating $τ_{in}$ using an approximate nonequilibrium distribution function rather than using $f^0$, one will find the system to be in the opposite limit $1/τ_{in}\ll 1/τ_{q}$ even for T=0 K. Therefore, models which depend on the assumption $1/τ_{in}\gg 1/τ_{q}$ may not be justifiable.
dc.description1 page
dc.identifierhttps://arxiv.org/abs/cond-mat/0506312
dc.identifierhttp://arxiv.org/abs/cond-mat/0506312
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/26502
dc.subjectMesoscale and Nanoscale Physics
dc.titleThe inelastic relaxation time due to electron-electron collisions in high-mobility two-dimensional systems under microwave radiations
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