2005/06/14 by X. L. Lei, Lei, X. L., S. Y. Liu +1
Physics and Astronomy · #FOS: Physical sciences #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Optical properties and cooling technologies in crystalline materials #Quantum and electron transport phenomena #Strong Light-Matter Interactions #cond-mat.mes-hall
paper · pdf · doi:10.48550/arxiv.cond-mat/0506312
1 page
arxiv created 2005/06/14 · openalex publication_date 2005/06/14 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
In some theoretical analyses of microwave-induced magnetoresistance oscillations in high-mobility two-dimensional systems, the "inelastic relaxation time" τin due to electron-electron scattering is evaluated using an equilibrium distribution function f0 in the absence of radiation, and it is concluded that τin is much larger than τq, 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 f0 at low temperatures. Estimating τin using an approximate nonequilibrium distribution function rather than using f0, one will find the system to be in the opposite limit 1/τin≪ 1/τq even for T=0 K. Therefore, models which depend on the assumption 1/τin≫ 1/τq may not be justifiable.