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

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

2004-07-13

arxiv.org/abs/cond-mat/0407341v1

Phys. Rev. B 70, 041304(R) (2004)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 4 figures. Scheduled to appear in PRB 70, 041304 (2004)

Scientific paper

10.1103/PhysRevB.70.041304

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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