Mobius带上经典Heisenberg铁磁体的畴壁结构
Domain-wall structure of a classical Heisenberg ferromagnet on a Mobius strip
摘要：
从理论上研究了莫比乌斯带上铁磁态畴壁的结构。在平均场近似下，通过考虑边界条件实现了Mobius几何，讨论了二维单格点各向异性海森堡铁磁体的经典解。结果表明，可以形成两种类型的畴壁，即，平行或垂直于圆周，这些畴壁的相对稳定性是敏感的温度和施加的磁场的变化。磁化强度具有作为温度和外场的函数的不连续性。
英文摘要：
We study theoretically the structure of domain walls in ferromagnetic states on Mobius strips. A two-dimensional classical Heisenberg ferromagnet with single-site anisotropy is treated within a mean-field approximation by taking into account the boundary condition to realize the Mobius geometry. It is found that two types of domain walls can be formed, namely, parallel or perpendicular to the circumference, and that the relative stability of these domain walls is sensitive to the change in temperature and an applied magnetic field. The magnetization has a discontinuity as a function of temperature and the external field.
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