Rapid Communications

Pramana

, Volume 30, Issue 5, pp L459-L462

Length-independent voltage fluctuations in small conductors

  • A M JayannavarAffiliated withDepartment of Physics, Indian Institute of Science

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Abstract

The mean-squared voltage fluctuation of a disordered conductor of lengthL smaller than the phase coherence lengthL ϕ, is independent of the distance between the probes. We obtain this result using the voltage additivity and the known results for the conductance fluctuation. Our results complement the recent theoretical and experimental findings.

Keywords

Universal conductance fluctuations phase coherence length

PACS Nos

72.10 72.15 72.90