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- W2019420404 abstract "AbstractIt is known that ±J square Ising lattices exhibit hysteresis in the isotropic case emulating some general behavior of spin glasses. On the otherhand, some experimental curves of hysteresis in real spin glasses show additional features not explained by simulation on isotropic systems.In the present work, we explore the possibility of explaining some of these features by introducing anisotropic ±J exchange interactions sothey are stronger along one direction by an anisotropy factor f (square symmetry is broken), which is varied in the interval 1–8. For eachsample, hysteresis cycles are found varying temperature by means of Monte Carlo method. The analysis is extended over many samples foreach size searching for average magnetization values under different realizations. Two interesting properties are established in this paper: (a)Loops break into sub loops; (b) Energy loss per cycle (area within the hysteresis loop) tends to increase with f, which is an indication for amore stable spin-glass phase in the presence of anisotropy. Comments comparing these results with experiment are also included.© 2003 Elsevier B.V. All rights reserved." @default.
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- W2019420404 date "2004-04-01" @default.
- W2019420404 modified "2023-09-27" @default.
- W2019420404 title "Hysteresis for anisotropic ±J Ising square lattices" @default.
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- W2019420404 doi "https://doi.org/10.1016/j.jallcom.2003.09.055" @default.
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