Spin waves in a complex magnetic system: nonextensive approach
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چکیده
In this paper we analyze the spin-wave excitations (magnons) of an inhomogeneous spin system within the Boltzmann-Gibbs framework and then connect the results with the nonextensive approach (in the sense of Tsallis statistics). Considering an equivalence between those two frameworks, we could connect the entropic parameter q with moments of the distribution of exchange integrals of the inhomogenous system. It ratifies the idea that the entropic parameter is connected to the microscopic properties of the system. PACS numbers: 05.70.Ce, 75.10.-b, 75.30.Ds
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تاریخ انتشار 2008