论文标题

3D人造自旋冰上的磁电荷传播

Magnetic Charge Propagation upon a 3D Artificial Spin-ice

论文作者

May, Andrew, Saccone, Michael, Berg, Arjen van den, Askey, Joseph, Hunt, Matthew, Ladak, Sam

论文摘要

散装挫败材料中的磁电荷传播在科学方面产生了范式转移,从而可以研究电力和磁性之间的对称性。现在,最近的工作表明,自旋冰表面上的磁电荷动力学可能在确定排序和相关相空间方面具有重要意义。在这里,我们详细介绍了一个3D人造自旋冰冰,这是一个3D纳米结构的磁岛阵列,可捕获散装系统的确切几何形状,从而可以直接在表面上可视化磁性电荷的磁场驱动动力学。使用磁显微镜,我们观察到沿两个原理方向的巨大不同的磁电荷动力学。这些引人注目的差异被发现是由于表面末端和相关的协调造成的,该配位产生了不同的能量和相互作用强度,以便在表面上磁性电荷。

Magnetic charge propagation in bulk frustrated materials has yielded a paradigm-shift in science, allowing the symmetry between electricity and magnetism to be studied. Recent work is now suggesting magnetic charge dynamics upon the spin-ice surface may have important implications in determining the ordering and associated phase space. Here we detail a 3D artificial spin-ice, a 3D nanostructured array of magnetic islands which captures the exact geometry of bulk systems, allowing field-driven dynamics of magnetic charge to be directly visualized upon the surface. Using magnetic microscopy, we observe vastly different magnetic charge dynamics along two principle directions. These striking differences are found to be due to the surface-termination and associated coordination which yields different energetics and interaction strengths for magnetic charges upon the surface.

扫码加入交流群

加入微信交流群

微信交流群二维码

扫码加入学术交流群,获取更多资源