NONEQUILIBRIUM CURRENT NOISE SPECTRUM IN A DISSIPATIVE CONDUCTOR

被引：15

作者：

UEDA, M

SHIMIZU, A

机构：

[1] UNIV TOKYO, INST SOLID STATE PHYS, TOKYO 106, JAPAN

[2] UNIV TOKYO, INST PHYS, TOKYO 153, JAPAN

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1993年 / 62卷 / 09期

关键词：

D O I：

10.1143/JPSJ.62.2994

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the noise spectrum of electrical current in a voltage-biased conductor. At low frequencies, the noise power in a nondissipative conductor is below the standard quantum limit which typically appears in tunnel junctions. Energy dissipation in the conductor further reduces the low-frequency noise power, nearly to zero when the dissipation is strong enough. At high frequencies, however, the noise is no longer suppressed, and the noise power approaches the standard quantum limit irrespective of the strength of energy dissipation.

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页码：2994 / 2998

页数：5

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