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
ABI
Abstract
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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