QUANTUM-THEORY OF INFRARED-ABSORPTION IN A GRATING-COUPLED 2-DIMENSIONAL ELECTRON-GAS

被引：5

作者：

LIU, DZ

DASSARMA, S

机构：

[1] Joint Program for Advanced Electronic Materials, Department of Physics, University of Maryland, College Park

来源：

PHYSICAL REVIEW B | 1991年 / 44卷 / 16期

关键词：

D O I：

10.1103/PhysRevB.44.9122

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A calculation of the experimentally measurable transmission coefficient for infrared light through a planar grating and the underlying two-dimensional electron gas is carried out using classical electrodynamics and quantum-mechanical linear-response theory. Si inversion layer and GaAs heterostructure systems are studied, both with and without an external magnetic field. We find the difference between the classical Drude and the quantum-mechanical results to be rather small for currently accessible grating spacings. We discuss the effect of a finite relaxation time on the transmission spectra and the higher-harmonic magnetoplasmon resonances in the presence of a magnetic field.

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页码：9122 / 9125

页数：4

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