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

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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)

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Mesoscale and Nanoscale Physics, Disordered Systems and Neural Networks

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http://salesiana.dossiersoluciones.com/handle/123456789/24414

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0407341
 http://arxiv.org/abs/cond-mat/0407341
 Phys. Rev. B 70, 041304(R) (2004)
 doi:10.1103/PhysRevB.70.041304

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arXiv