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Electronic coherence in metals: comparing weak localization and time-dependent conductance fluctuations

A. Trionfi·S. Lee·D. Natelson
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Abstract

Quantum corrections to the conductivity allow experimental assessment of electronic coherence in metals. We consider whether independent measurements of different corrections are quantitatively consistent, particularly in systems with spin-orbit or magnetic impurity scattering. We report weak localization and time-dependent universal conductance fluctuation data in quasi-one- and two-dimensional AuPd wires between 2 K and 20 K. The data inferred from both methods are in excellent quantitative agreement, implying that precisely the same coherence length is relevant to both corrections.

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A. Trionfi, S. Lee, D. Natelson. 2004-07-13. Electronic coherence in metals: comparing weak localization and time-dependent conductance fluctuations. https://doi.org/10.1103/physrevb.70.041304

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