On the dynamics of low-dimensional Heisenberg magnets with <i>S</i> = 1/2
T. N. AntsyginaB. I. Verkin Physicotechnical Institute of Low Temperatures, Ukrainian Academy of Sciences, KharkovV. A. SlyusarevB. I. Verkin Physicotechnical Institute of Low Temperatures, Ukrainian Academy of Sciences, Kharkov
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The thermodynamics and temperature dependence of spin correlation functions are analyzed for two- and quasi-two-dimensional Heisenberg magnets with a spin S-1/2 in an arbitrary temperature range. The method of Green’s functions uncoupling used for this purpose explicitly takes into account the short-range order and rules out long-range order in the system.
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