Rodlike Heisenberg nanomagnet driven by propagating magnetic field: Nonequilibrium phase transition

Muktish Acharyya ()
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Muktish Acharyya: Department of Physics, Presidency University, 86/1 College Street, Kolkata 700073, India

International Journal of Modern Physics C (IJMPC), 2022, vol. 33, issue 10, 1-11

Abstract: The dynamical responses of a rodlike anisotropic Heisenberg ferromagnet, irradiated by the propagating magnetic field wave, have been studied by Monte Carlo simulation using Metropolis single-spin-flip algorithm. A nonequilibrium dynamical phase transition has been observed. The transition temperature has been obtained from the peak position of the variance of the dynamic order parameter plotted as a function of the temperature. The transition has been found to occur at a lower temperature for the higher value of the amplitude of the propagating magnetic field wave. A comprehensive phase boundary was drawn. The phase boundary has been found to be insensitive to the wavelength of the propagating field wave. The boundary encloses more area of the region of the ordered phase for stronger anisotropy.

Keywords: Heisenberg ferromagnet; Monte Carlo simulation; Metropolis algorithm; magnetic anisotropy (search for similar items in EconPapers)
Date: 2022
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DOI: 10.1142/S0129183122501297

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