Quantum shot noise spectrum of a point contact

S. R. Eric Yang

doi:10.1016/0038-1098(92)90760-7

Quantum shot noise spectrum of a point contact

S. R. Eric Yang

Research output: Contribution to journal › Article › peer-review

46 Citations (Scopus)

Abstract

We have obtained a complete analytical expression for a fluctuation-dissipation relation which determines the current noise spectrum of a point contact where the transmission coefficient can be large. We infer from this result that the junction I(V) characteristic can be used to find the noise current spectrum. It is also shown explicitly that the suppression of the quantum shot noise for large transmission probability is a consequence of the fact that for fermions the fluctuations of the occupancy number of a level is small when the average occupancy is close to one.

Original language	English
Pages (from-to)	375-378
Number of pages	4
Journal	Solid State Communications
Volume	81
Issue number	5
DOIs	https://doi.org/10.1016/0038-1098(92)90760-7
Publication status	Published - 1992 Feb
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
Materials Chemistry

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10.1016/0038-1098(92)90760-7

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abstract = "We have obtained a complete analytical expression for a fluctuation-dissipation relation which determines the current noise spectrum of a point contact where the transmission coefficient can be large. We infer from this result that the junction I(V) characteristic can be used to find the noise current spectrum. It is also shown explicitly that the suppression of the quantum shot noise for large transmission probability is a consequence of the fact that for fermions the fluctuations of the occupancy number of a level is small when the average occupancy is close to one.",

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AB - We have obtained a complete analytical expression for a fluctuation-dissipation relation which determines the current noise spectrum of a point contact where the transmission coefficient can be large. We infer from this result that the junction I(V) characteristic can be used to find the noise current spectrum. It is also shown explicitly that the suppression of the quantum shot noise for large transmission probability is a consequence of the fact that for fermions the fluctuations of the occupancy number of a level is small when the average occupancy is close to one.

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Quantum shot noise spectrum of a point contact

Abstract

ASJC Scopus subject areas

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