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- W2006809197 abstract "This review contains a comprehensive examination of all modern measurements and calculations of the temperature-dependent electrical resistivity $ensuremath{rho}(T)$ for the alkali metals---and especially potassium (K)---from their melting points down to below 0.1 K. The simplicity of the electronic structures of these metals makes them unique for testing our fundamental understanding of $ensuremath{rho}(T)$. At all temperatures down to a few K, $ensuremath{rho}(T)$ is dominated by its electron-phonon scattering component, ${ensuremath{rho}}_{mathrm{ep}}(T)$. Current quantitative understanding of ${ensuremath{rho}}_{mathrm{ep}}(T)$ in the alkali metals is examined in detail, including effects of phonon drag at temperatures below ensuremath{simeq} 10 K. In the vicinity of 1 K, $ensuremath{rho}(T)$ in pure, unperturbed, bulk alkali metals is predicted to be dominated by electron-electron scattering. ${ensuremath{rho}}_{mathrm{ee}}(T)={A}_{mathrm{ee}}{T}^{2}$. In disagreement with previous reviews, the authors argue that ${A}_{mathrm{ee}}$ is nearly constant for each alkali metal and---at least for K---also in quantitative agreement with calculation. Below 1 K, alloys based on K and lithium display both previously predicted and completely unexpected effects. Perturbations such as deformation and thinning of K wires induce unusual and interesting behaviors. An unexpected Kondo-like effect appears when K contacts polyethylene. Charge-density-wave-based predictions of contributions to $ensuremath{rho}(T)$ in the alkali metals are also considered. Three appendices examine (a) what is involved in a realistic calculation of $ensuremath{rho}(T)$; (b) the experimental problems encountered in high-precision measurements of $ensuremath{rho}(T)$ at low temperatures and how they are solved; and (c) the most recent experimental data concerning charge-density waves in the alkali metals." @default.
- W2006809197 created "2016-06-24" @default.
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- W2006809197 date "1990-07-01" @default.
- W2006809197 modified "2023-10-18" @default.
- W2006809197 title "The temperature-dependent electrical resistivities of the alkali metals" @default.
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