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

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.

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

References in corpus (6)

• Intrinsic Decoherence in Mesoscopic Systems
• Dephasing of Electrons in Mesoscopic Metal Wires
• Interaction effects and phase relaxation in disordered systems
• Inelastic Electron Lifetime in Disordered Mesoscopic Systems
• Dephasing by extremely dilute magnetic impurities revealed by Aharonov-Bohm oscillations
• Inelastic Scattering Time for Conductance Fluctuations

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• Quantum coherence in a ferromagnetic metal: time-dependent conductance fluctuations
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• Influence of magnetic and electric fields on universal conductance fluctuations in thin films of the Dirac semi-metal Cd3As2
• Low-temperature electron dephasing time in AuPd revisited
• Time-dependent universal conductance fluctuations in mesoscopic Au wires: implications
• Higher-order mesoscopic fluctuations in quantum wires: Conductance and current cumulants
• Potential Fluctuations at Low Temperatures in Mesoscopic-Scale SmTiO${}_3$/SrTiO${}_3$/SmTiO${}_3$ Quantum Well Structures
• Quantum Memory Effects in Disordered Systems and Their Relation to 1/f Noise
• Quantum Transport Reservoir Computing