Department of Physics and Center for Theoretical Sciences, National Taiwan University, Taipei, Taiwan, Republic of China.
J Phys Condens Matter. 2012 Feb 29;24(8):086001. doi: 10.1088/0953-8984/24/8/086001. Epub 2012 Jan 26.
The Dzyaloshinskii-Moriya (DM) interaction in metals is an important mechanism for many magnetic properties. We start with the s-d exchange model and spin-orbit interaction for weak itinerant ferromagnetic systems to establish the form of DM interaction for metallic magnetic systems. The s-d exchange interaction is treated accurately and the conduction electron-mediated magnetism gives a form of DM interaction which is different from that in insulators. The implications of our result to spiral spin states and skyrmion lattices are also discussed.
在金属中，Dzyaloshinskii-Moriya（DM）相互作用是许多磁性能的重要机制。我们从 s-d 交换模型和弱巡游铁磁系统的自旋轨道相互作用开始，为金属磁系统建立 DM 相互作用的形式。s-d 交换相互作用被准确地处理，传导电子介导的磁性给出了一种与绝缘体中不同的 DM 相互作用形式。我们的结果对螺旋自旋态和Skyrmion 晶格的影响也进行了讨论。
