Direct-current control of radiation-induced differential magnetoresistance oscillations in two-dimensional electron systems

被引：18

作者：

Lei, X. L. ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Dept Phys, Shanghai 200030, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 11期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1063/1.2783260

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Magnetoresistance oscillations in two-dimensional electron systems driven simultaneously by a strong direct current and a microwave irradiation are analyzed within a unified microscopic scheme treating both excitations on an equal footing. The microwave-induced resistance oscillations are described by a parameter epsilon(omega) proportional to the radiation frequency, while the dc-induced resistance oscillations are governed by a parameter epsilon(j) proportional to the current density. In the presence of both a microwave radiation and a strong dc, the combined parameter epsilon(omega)+epsilon(j) is shown to control the main resistance oscillations, in agreement with the recent measurement [Zhang , Phys. Rev. Lett. 98, 106804 (2007)].

引用

页数：3