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http://hdl.handle.net/10397/5383
Title: | Temperature for a dynamic spin ensemble | Authors: | Ma, PW Dudarev, SL Semenov, AA Woo, CH |
Issue Date: | Sep-2010 | Source: | Physical review. E, Statistical, nonlinear, and soft matter physics, Sept. 2010, v. 82, no. 3, 031111, p. 1-6 | Abstract: | In molecular dynamics simulations, temperature is evaluated, via the equipartition principle, by computing the mean kinetic energy of atoms. There is no similar recipe yet for evaluating temperature of a dynamic system of interacting spins. By solving semiclassical Langevin spin-dynamics equations, and applying the fluctuation-dissipation theorem, we derive an equation for the temperature of a spin ensemble, expressed in terms of dynamic spin variables. The fact that definitions for the kinetic and spin temperatures are fully consistent is illustrated using large-scale spin dynamics and spin-lattice dynamics simulations. | Keywords: | Nickel Fluctuations Particles Magnetism States |
Publisher: | American Physical Society | Journal: | Physical review. E, Statistical, nonlinear, and soft matter physics | ISSN: | 1539-3755 | EISSN: | 1550-2376 | DOI: | 10.1103/PhysRevE.82.031111 | Rights: | Physical Review E © 2010 The American Physical Society. The Journal's web site is located at http://pre.aps.org/ |
Appears in Collections: | Journal/Magazine Article |
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Ma_Temperature_Dynamic_Spin.pdf | 269.8 kB | Adobe PDF | View/Open |
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