Dynamical susceptibilities in itinerant antiferromagnetic alloys

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, , Citation S Ami and W Young 1981 J. Phys. F: Met. Phys. 11 1913 DOI 10.1088/0305-4608/11/9/021

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1 Dept. of Phys., Queen Mary Coll., London, UK

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0305-4608/11/9/1913

Abstract

The dynamical susceptibilities are derived for all temperatures within a one-band Hubbard model in the presence of dilute random impurities within the random phase approximation. Explicit expressions are obtained for the transverse susceptibility, spin-wave velocity and damping for T=0. The spin-wave velocity decreases linearly at first and then drastically at higher concentrations.

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