Spin-waves in a complex magnetic system: nonextensive approach

Details Spin-waves in a complex magnetic system: nonextensive approach Spin-waves in a complex magnetic system: nonextensive approach

2007-06-14

arxiv.org/abs/0706.2201v2

J. Stat. Mech. (2007) P08011

Physics

Condensed Matter

Statistical Mechanics

9 pages, 1 figure

Scientific paper

10.1088/1742-5468/2007/08/P08011

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.

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