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Residual Resistivity of Disordered Systems
Author(s) -
Richter J.,
Schiller W.
Publication year - 1978
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220890117
Subject(s) - electrical resistivity and conductivity , residual resistivity , condensed matter physics , residual , diagonal , scattering , binary number , coherent potential approximation , materials science , physics , quantum mechanics , mathematics , electronic structure , geometry , arithmetic , algorithm
By using the method of force‐force correlation functions the residual resistivity is calculated for disordered systems in second order of the fluctuating quantities. Going in this order beyond the single‐site character of usual CPA calculations diagonal disorder as well as off‐diagonal disorder, fluctuations of atomic distances, and coupling between the several disorder fluctuations are taken into account. In the weak scattering limit the distance fluctuations yield no direct contributions to the resistivity. In general, the off‐diagonal disorder gives rise to an important term in the residual resistivity and may cause a deviation from Nordheim's rule for binary disordered crystalline alloys.