抄録
The effect of an external magnetic field on the resistivity of dilute magnetic alloys is investigated with the use of the Green’s functions. The equation of motion for the Zubarev Green’s functions with an external magnetic field included is solved correctly up to order J3 and to all orders in V, where J is the exchange integral and V the spin-independent potential. The effect of the external magnetic field is involved in the Zeeman term of logarithmic terms and in Fσ(ω) which shows the effect of freezing out of spin-flip scattering. The effect of the spin-independent potential is involved in the modified density of states \ ildeρ and in a phase δv of the t matrix.
The magnetoresistance obtained from numerical calculation shows a variety of patterns which are classified by the sign of J\ ildeρ and the value of the phase shift δv.
