Charge-density and spin-density excitations in a two-dimensional electron gas with Rashba spin-orbit coupling

被引：7
|
作者：
Xu, L. J. [1 ]
Wu, X. G. [1 ]
机构：
[1] Chinese Acad Sci, Inst Semicond, SKLSM, Beijing 100083, Peoples R China
来源：
PHYSICAL REVIEW B | 2006年 / 74卷 / 16期
关键词：
D O I：
10.1103/PhysRevB.74.165315
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We study theoretically the charge-density and spin-density excitations in a two-dimensional electron gas in the presence of a perpendicular magnetic field and a Rashba type spin-orbit coupling. The dispersion and the corresponding intensity of excitations in the vicinity of cyclotron resonance frequency are calculated within the framework of random phase approximation. The dependence of excitation dispersion on various system parameters, i.e., the Rashba spin-orbit interaction strength, the electron density, the Zeeman spin splitting, and the Coulomb interaction strength is investigated.
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页数：7
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