基于磁电效应的表面等离激元斯格明子晶格
Plasmonic Skyrmion Lattice Based on the Magnetoelectric Effect.
作者信息
Wang X-G, Chotorlishvili L, Arnold N, Dugaev V K, Maznichenko I, Barnaś J, Buczek P A, Parkin S S P, Ernst A
机构信息
School of Physics and Electronics, Central South University, Changsha 410083, China.
Institut für Physik, Martin-Luther Universität Halle-Wittenberg, D-06120 Halle/Saale, Germany.
出版信息
Phys Rev Lett. 2020 Nov 27;125(22):227201. doi: 10.1103/PhysRevLett.125.227201.
The physical mechanism of the plasmonic skyrmion lattice formation in a magnetic layer deposited on a metallic substrate is studied theoretically. The optical lattice is the essence of the standing interference pattern of the surface plasmon polaritons created through coherent or incoherent laser sources. The nodal points of the interference pattern play the role of lattice sites where skyrmions are confined. The confinement appears as a result of the magnetoelectric effect and the electric field associated with the plasmon waves. The proposed model is applicable to yttrium iron garnet and single-phase multiferroics and combines plasmonics and skyrmionics.
从理论上研究了沉积在金属衬底上的磁性层中等离激元斯格明子晶格形成的物理机制。光学晶格是通过相干或非相干激光源产生的表面等离激元极化激元驻波干涉图样的本质。干涉图样的节点起到了限制斯格明子的晶格位置的作用。这种限制是由磁电效应和与等离激元波相关的电场导致的。所提出的模型适用于钇铁石榴石和单相多铁性材料，并且结合了等离激元学和斯格明子学。
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