The Anomalous Low Temperature Electrical Resistivity Properties Of Dilute Magnetic Alloys

The existence of localized magnetic moments in dilute magnetic alloys that couple to thernconduction electrons has important consequences for the electrical resistivity. The magneticrnimpurities act as scattering centers, and if they are the predominant type of impurity then at lowrnenough temperature the scattering causes the electrical resistivity. The exchange interactionrnbetween the conduction and the localized moments leads to scattering events in which thernelectron spin is flipped. Calculating the transition probabilities of the conduction electrons tornthe third order of interaction it is shown that the transition probability has a logarithmicrnanomaly at the Fermi-surface and that in the resistivity there appears a term proportional to lnTrnand diverges as the temperature approaches zero.

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