Modulation origin of 1/f noise in two-dimensional hopping -: art. no. 201318

被引：14

作者：

Pokrovskii, VY ^{[1
]}

Savchenko, AK

Tribe, WR

Linfield, EH

机构：

[1] Univ Exeter, Sch Phys, Exeter EX4 4QL, Devon, England

[2] Russian Acad Sci, Inst Radio Engn & Elect, Moscow 103907, Russia

[3] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

来源：

PHYSICAL REVIEW B | 2001年 / 64卷 / 20期

关键词：

D O I：

10.1103/PhysRevB.64.201318

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We show that 1/f noise in a two-dimensional electron gas with hopping conduction can be explained by the modulation of conducting paths by fluctuating occupancy of nonconducting states. The noise is sensitive to the structure of the critical hopping network, which is varied by changing electron concentration, sample size and temperature. With increasing temperature, it clearly reveals the crossover between different hopping regimes.

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