Universal saturation of electron dephasing in three-dimensional disordered metals

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dc.creatorLin, J. J.
dc.creatorKao, L. Y.
dc.date2000-07-26
dc.date2000-07-31
dc.date.accessioned2026-07-07T13:11:32Z
dc.date.available2026-07-07T13:11:32Z
dc.descriptionWe have systematically investigated the low-temperature electron dephasing times $τ_ϕ$ in more than 40 three-dimensional polycrystalline impure metals with distinct material characteristics. In all cases, a saturation of the dephasing time is observed below about a (few) degree(s) Kelvin, depending on samples. The value of the saturated dephasing time $τ_0$ [$\equiv τ_ϕ(T \to 0 {\rm K})$] falls basically in the range 0.005 to 0.5 ns for all samples. Particularly, we find that $τ_0$ scales with the electron diffusion constant $D$ as $τ_0 \sim D^{- α}$, with $α$ close to or slightly larger than 1, for over two decades of $D$ from about 0.1 to 10 cm$^2$/s. Our observation suggests that the saturation behavior of $τ_ϕ$ is universal and intrinsic in three-dimensional polycrystalline impure metals. A complete theoretical explanation is not yet available.
dc.description4 pages, 3 eps figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0007417
dc.identifierhttp://arxiv.org/abs/cond-mat/0007417
dc.identifierJ. Phys.: Condens. Matter 13, L119 (2001)
dc.identifierdoi:10.1088/0953-8984/13/5/102
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/229313
dc.subjectDisordered Systems and Neural Networks
dc.subjectMesoscale and Nanoscale Physics
dc.titleUniversal saturation of electron dephasing in three-dimensional disordered metals
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