Dynamics of a system of randomly distributed spins with multipolar interactions: Application to dipolar systems

Charles W. Myles, C. Ebner, Peter A. Fedders

Research output: Contribution to journalArticle

17 Scopus citations

Abstract

A general first-principles method for the calculation of dynamical spin correlation functions in a system of randomly distributed, strongly interacting spins with multipolar interactions is presented. The method is valid in the high-temperature limit and is applicable at all spin concentrations c. As a numerical example, the case of dipolar forces is treated and the magnetic-resonance frequency line shape is calculated for a variety of values of c. The general trend of the change in line shape with c obtained agrees with phenomenological theories and with experiment. The theoretical linewidth has the correct c dependence in both the c1 and c0 limits.

Original languageEnglish
Pages (from-to)1-12
Number of pages12
JournalPhysical Review B
Volume14
Issue number1
DOIs
StatePublished - 1976

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