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Title: Quantum theory of the absorption of a weak eletromagnetic wave by the free carriers in two dimensional electron system
Authors: Nguyen, Quang Bau
Keywords: quantum theory;eletromagnetic wave;dimensional electron system
Issue Date: 2006
Publisher: H. : ĐHQGHN
Series/Report no.: Vol. 22;No. 4 (2006)
Abstract: Analytic expressions for the obsorption coefficient of a weak Electromag­netic Wave (EMW) by free carriers for the case electron-optical phonon scattering in 2 dimensional system (quantum wells and doped superlattices) are calculated by the KuboMori method in two cases: the absence of a magnetic field and the pres­ence of a magnetic field applied perpendicular to its barriers, A different dependence of the absorption coefficient on the temperature T of system, the electromagnetic wave frequency , the cyclotron frequency n (when a magnetic field is present) and characteristic parameters of a 2 dimensional system in comparision with normal semi­conductors are obtained. The analytic expressions are numerically evaluated plotted and discussed for a specific 2 dimensional system (AlAs/GaAs/AlAs quantum well and n-GaAs/p-GaAs superlattice).
Description: p. 47-63
ISSN: 2588-1124
Appears in Collections:Mathematics and Physics

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