Impurity spin in normal stochastic field: basic model of magnetic resonance
Abstract
Famous Anderson-Weiss-Kubo model of magnetic resonance is reconsidered in order to bridge existing gaps in its applications for solutions of fundamental problems of spin dynamics and theory of master equations. The model considers the local field fluctuations as one-dimensional normal random process. We refined the conditions of applicability of perturbation theory to calculate the spin depolarization. It is shown that for very slow fluctuations the behavior of the longitudinal magnetization is simply related to the correlation function of the local field. The effect could be checked by the experimental studies of magnetic resonance in quasi-Ising paramagnets.
About the Authors
F. S. Dzheparov
Institute for Theoretical and Experimental Physics; National Research Nuclear University "MEPhI"
Russian Federation
Russian Federation
B. Cheremushkinskaya 25, Moscow 117258; Kashirskoe shosse 31, Moscow 115409
D. V. Lvov
Institute for Theoretical and Experimental Physics; National Research Nuclear University "MEPhI"
Russian Federation
Russian Federation
B. Cheremushkinskaya 25, Moscow 117258; Kashirskoe shosse 31, Moscow 115409
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Review
For citations:
Dzheparov F.S., Lvov D.V. Impurity spin in normal stochastic field: basic model of magnetic resonance. Magnetic Resonance in Solids. 2016;18(2):16201 (8 pp.).
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