Resistivity from magnetic impurity pairs in metallic alloys
Journal Article
·
· Phys. Rev. B: Condens. Matter; (United States)
The spin-flip contributions to the electron scattering by a pair of magnetic impurities is found to exhibit a T/sup -1/ behavior in the temperature variation of the cross section. Our calculations provide an explanation for the sharp decrease in the low-temperature resistivities of several alloys in the intermediate concentration regime where the Kondo effect is inoperative and the Ruderman-Kittel-Kasuya-Yosida (RKKY) coupling between impurities is substantial. Accordingly, the size and magnitude of the impurity pair contribution to the resistivity is a senstive function of the impurity concentration and the electronic structure of the host metal. Our computations agree with the data of CuMn/sub x/, AgMn/sub x/, AuMn/sub x/, and AuCr/sub x/, and they predict the observed variation of the resistivity maximum with impurity concentration using a standard RKKY coupling between impurities.
- Research Organization:
- Department of Physics, University of Virginia, Charlottesville, Virginia 22901
- OSTI ID:
- 5853103
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 36:1; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
656002* -- Condensed Matter Physics-- General Techniques in Condensed Matter-- (1987-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOY SYSTEMS
ALLOYS
BINARY ALLOY SYSTEMS
CHROMIUM ALLOYS
COPPER ALLOYS
COUPLING
CROSS SECTIONS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
GOLD ALLOYS
IMPURITIES
LEPTONS
MAGNETIC MATERIALS
MANGANESE ALLOYS
MATERIALS
PHYSICAL PROPERTIES
RUDERMAN-KITTEL COUPLING
SILVER ALLOYS
SPIN FLIP
TEMPERATURE DEPENDENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOY SYSTEMS
ALLOYS
BINARY ALLOY SYSTEMS
CHROMIUM ALLOYS
COPPER ALLOYS
COUPLING
CROSS SECTIONS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
GOLD ALLOYS
IMPURITIES
LEPTONS
MAGNETIC MATERIALS
MANGANESE ALLOYS
MATERIALS
PHYSICAL PROPERTIES
RUDERMAN-KITTEL COUPLING
SILVER ALLOYS
SPIN FLIP
TEMPERATURE DEPENDENCE