Critical resistivity of deviations from Matthiessen's rule of polyvalent metals

Sharma, Surinder M. (1979) Critical resistivity of deviations from Matthiessen's rule of polyvalent metals Physical Review B: Condensed Matter and Materials Physics, 20 (4). pp. 1514-1518. ISSN 1098-0121

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Official URL: http://prb.aps.org/abstract/PRB/v20/i4/p1514_1

Related URL: http://dx.doi.org/10.1103/PhysRevB.20.1514

Abstract

Based on the isotropization mechanism of impurity scattering, the temperature dependence of the critical resistivity for the onset of deviations from Matthiessen's rule has been analyzed. It is shown that if a constant matrix element (for electron-phonon interaction) is used, the critical resistivity shows a T2 dependence and that a T4 component also results if the momentum dependence of the matrix element is taken into account. At very low temperatures, where two orthogonalized-plane-wave corrections to the Fermi surface are important, the critical resistivity behaves as T3. It is shown that the experimental systematics of the critical resistivity can be understood within this framework.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:48183
Deposited On:13 Jul 2011 14:20
Last Modified:13 Jul 2011 14:20

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