Photo-assisted shot noise in the fractional quantum Hall regime

被引：0

作者：

Crépieux, A ^{[1
]}

Devillard, P ^{[1
]}

Martin, T ^{[1
]}

机构：

[1] Univ Mediterranee, Ctr Phys Theor, F-13288 Marseille, France

来源：

Noise and Fluctuations | 2005年 / 780卷

关键词：

shot noise; Luttinger liquid; edge states; photo-assisted transport;

D O I：

暂无

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

The effect of an ac perturbation on the shot noise of a fractional quantum Hall fluid is studied at finite temperature. For a normal metal, it is known that the zero-frequency noise derivative exhibits steps as a function of bias voltage. In contrast, at Laughlin fractions, the backscattering noise exhibits evenly spaced singularities, which are reminiscent of tunneling density-of-states singularities for quasiparticles. The spacing is determined by the quasiparticle charge ve and the ratio of the do bias with respect to the drive frequency. Photo-assisted transport can thus be considered as a probe for effective charges of the quantum Hall effect.

引用

页码：488 / 491

页数：4

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