论文标题
相互作用的旋转系统中的单极场纹理
Monopole Field Textures in Interacting Spin Systems
论文作者
论文摘要
磁性单极可以在各种物理环境中以新兴结构的形式出现，从旋转冰到半含量的韦尔点不等。在这里，在相互作用的旋转系统中证明了合成（浆果）单极的分布 - $ \ frac {1} {2} $粒子，带有损坏的球形对称性。这些单极可以在外部场非零的点找到。自旋旋转相互作用提供了一种分解合成局部磁电荷的机制，直到其幅度达到最小的允许值$ \ frac {1} {2} $。对于某些状态，可以在参数空间的任意有限区域中创建非零净电荷。在存在自旋旋转相互作用的情况下，单极场纹理包含非单孔贡献。
Magnetic monopoles can appear as emergent structures in a wide range of physical settings, ranging from spin ice to Weyl points in semimetals. Here, a distribution of synthetic (Berry) monopoles in parameter space of a slowly changing external magnetic field is demonstrated in a system of interacting spin-$\frac{1}{2}$ particles with broken spherical symmetry. These monopoles can be found at points where the external field is nonzero. The spin-spin interaction provides a mechanism for splitting the synthetic local magnetic charges until their magnitude reach the smallest allowed value $\frac{1}{2}$. For certain states, a nonzero net charge can be created in an arbitrarily large finite region of parameter space. The monopole field textures contain non-monopolar contributions in the presence of spin-spin interaction.
