The magnetoresistance of dilute magnetic alloys is calculated for arbitrary magnetic fields and temperatures by $S$-matrix theory on the basis of the $s-d$ model. The results agree qualitatively with the experiments of Monod on Mn in Cu in the temperature range covered by him, but not with the results of Daybell and Steyert on Cr in Cu.

• Received 8 January 1968

DOI:https://doi.org/10.1103/PhysRevLett.20.500