Abstract
Singular points of spin autocorrelation functions on the imaginary time axis, which determine the arguments of exponential high-frequency asymptotic behaviors, have been analyzed. It has been shown that randomly distributed inhomogeneous magnetic fields expand the wings of spectra of autocorrelation functions and, thereby, intensify the heating of a system subjected to variable magnetic fields, which are used to create effective Hamiltonians or at the saturation of inhomogeneously broadened EPR lines.
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Original Russian Text © V.E. Zobov, M.M. Kucherov, 2018, published in Pis’ma v Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2018, Vol. 107, No. 9, pp. 578–582.
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Zobov, V.E., Kucherov, M.M. On the Effect of an Inhomogeneous Magnetic Field on High-Frequency Asymptotic Behaviors of Correlation Functions of Spin Lattices. Jetp Lett. 107, 553–557 (2018). https://doi.org/10.1134/S002136401809014X
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DOI: https://doi.org/10.1134/S002136401809014X