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The Electrical Resistivity of Clustering Alloys
Author(s) -
Schubert G.,
Richter J.
Publication year - 1984
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.2221250247
Subject(s) - electrical resistivity and conductivity , condensed matter physics , cluster (spacecraft) , materials science , cluster analysis , scattering , alloy , fermi level , plane (geometry) , cluster size , physics , metallurgy , mathematics , geometry , electronic structure , optics , quantum mechanics , statistics , computer science , programming language , electron
The electrical resistivity ϱ of clustering alloys is calculated using the force–force correlation function scheme in the weak‐scattering limit. In the high‐temperature region both signs of the extra‐resistivity Δϱ caused by clustering effects are obtained to be possible in dependence on the Fermi level. At temperatures below the critical temperature of the alloy, where a cluster‐growing process occurs, the resistivity is calculated in dependence on the cluster size. For such alloys, where clustering causes a positive extra‐resistivity Δϱ in the high‐temperature region, the well‐known maximum of the resistivity at a critical cluster size is obtained for spherical clusters. The resistivity of alloys with a negative Δϱ in the high‐temperature region decreases monotonically during a growing process of spherical clusters. Some further numerical results for elliptical and plane clusters are given.