论文标题
内在的手性场是磁偶极子曲折晶格中磁电流的矢量电势
Intrinsic chiral field as vector potential of the magnetic current in the zig-zag lattice of magnetic dipoles
论文作者
论文摘要
手性磁绝缘子表现出了物质的新阶段，磁化的旋转感与外来传输现象有关。对此类阶段及其动力学演化的有效控制指向诸如Dzyaloshinskii-Moriya相互作用之类的手性领域的搜索和研究。在这里，我们将实验，数字和理论结合起来，研究锯齿形偶极晶格作为具有垂直磁化的磁性内层层之间的界面模型。锯齿形晶格包括两个平行的偶极子，垂直易于旋转平面。系统的偶极能可以完全分离为偶极之间的对称和反对称的远程交换相互作用，其中反对称耦合会产生非局部dzyaloshinskii-Moriya场，从而使绕线纹理稳定在缠绕的质地上。 dzyaloshinskii-moriya相互作用充当磁电流的矢量电位或量规场，并引起新兴的磁和电场，从而允许体现系统中磁电效应的表现。
Chiral magnetic insulators manifest novel phases of matter where the sense of rotation of the magnetization is associated with exotic transport phenomena. Effective control of such phases and their dynamical evolution points to the search and study of chiral fields like the Dzyaloshinskii-Moriya interaction. Here we combine experiments, numerics, and theory to study a zig-zag dipolar lattice as a model of an interface between magnetic in-plane layers with perpendicular magnetization. The zig-zag lattice comprises two parallel sublattices of dipoles with perpendicular easy plane of rotation. The dipolar energy of the system is exactly separable into a sum of symmetric and antisymmetric long-range exchange interactions between dipoles, where the antisymmetric coupling generates a nonlocal Dzyaloshinskii-Moriya field which stabilizes winding textures with the form of chiral solitons. The Dzyaloshinskii-Moriya interaction acts as a vector potential or gauge field of the magnetic current and gives rise to emergent magnetic and electric fields that allow the manifestation of the magnetoelectric effect in the system.
