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Monte Carlo simulation of the effects of higher-order anisotropy on the spin reorientation transition in the two-dimensional Heisenberg model with long-range interactions

机译:在具有长程相互作用的二维Heisenberg模型中高阶各向异性对自旋重取向转变的影响的蒙特卡罗模拟

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The strength of perpendicular anisotropy is known to drive the spin reorientation in thin magnetic films.Here, we consider the effect different order anisotropics have on two phase transitions: the spin reorientation and the orientational order transitions.We find that the relative magnitude of different order anisotropies can significantly enhance or suppress the degree to which the system reorients.Specifically, Monte Carlo simulations reveal significant changes in the cone angle and planar magnetization.In order to facilitate rapid computation, we have developed a stream processing technique, suitable for use on graphics processing unit (GPU) systems, for computing the transition probabilities in two-dimensional systems with dipole interactions.
机译:垂直各向异性的强度已知会驱动磁性薄膜的自旋重取向,在此我们考虑了不同阶各向异性对两个相变的影响:自旋重取向和取向阶跃,我们发现不同阶的相对幅度各向异性可以显着增强或抑制系统重新定向的程度。特别是,蒙特卡洛模拟揭示了锥角和平面磁化强度的显着变化。为了促进快速计算,我们开发了一种适用于图形的流处理技术。处理单元(GPU)系统,用于计算具有偶极子相互作用的二维系统中的跃迁概率。

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