论文标题

含有弹性长方体的杆磁铁:解释Onsager精神中的单域铁龙

Rod magnets inscribed in an elastic cuboid: interpreting single-domain ferroics in Onsager's spirit

论文作者

Wu, Jimin

论文摘要

通过熵用于铁反订单的玩具模型。由于杆/自旋浓度(或封闭铁杆的体积)通过与顺序参数的可调力共轭而变化,因此该模型表现出与某些不连续的各向同性 - 纽马的转变相关的磁滞,这基本上由Onsager的硬杆模型解释。构造的单轴各向异性和非周期性让人联想到Stoner-Wohlfarth的单域磁铁,并且玩具模型最终可能被视为具有一些可能的自我扩散障碍的硬铁的简约。自旋切换应由于清洁的两孔能量景观而可靠。

A toy model for ferroic orders through entropy. As the rod/spin concentration (or the volume enclosing the ferroic rods) is variable by a tunable force conjugate to the order parameter, the model exhibits hysteresis associated to some discontinuous isotropic-nematic transitions explained essentially by Onsager's hard-rod model. The uniaxial anisotropy and nonperiodicity by construction is reminiscent of Stoner-Wohlfarth's single-domain magnet, and the toy model may ultimately be seen as a minimalistic for hard ferroics with some possible self-averaging disorders. Spin togglings shall be reliable due to the clean two-well energy landscapes in the athermal transition theory.

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