Intrinsic decoherence in mesoscopic systems

被引：354

作者：

Mohanty, P

Jariwala, EMQ

Webb, RA

机构：

[1] Center for Superconductivity Research, Department of Physics, University of Maryland, College Park, MD

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 78卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.78.3366

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present measurements of the phase coherence time tau(phi) in six quasi-1D Au wires and clearly show that tau(phi) is temperature independent at low temperatures. We suggest that zero-point fluctuations of the phase coherent electrons are responsible for the observed saturation of tau(phi). We introduce a new functional form for the temperature dependence and present the results of a calculation for the saturation value of tau(phi). This explains the observed temperature dependence of our samples as well as many 1D and 2D systems reported to date.

引用

页码：3366 / 3369

页数：4

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