Magneto-chiral transport effects of skyrmions

斯格明子的磁手性输运效应

• 批准号: 403235169
• 负责人: Professor Dr. Yuriy Mokrousov
• 金额: --
• 依托单位: Institut für Physik
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/403235169?language=en
• 关键词: Magneto; chiral; transport; effects; skyrmions

In the course of the past decade skyrmions emerged as a new class of fascinating topological magnetic particles. At the same time, modelling of electron-skyrmion interaction, responsible for skyrmion transport and dynamics, faces fundamental difficulties in explaining the available data and treating transport effects and dynamics of skyrmion in strongly spin-orbit coupled, insulating, superconducting, and even in most elementary compounds. It is thus imperative for future progress in the area to develop a proper theory which is able to treat electronic effects in skyrmions in full, accounting properly for the entangled dynamical and topological nature of chiral solitons. Driven by our previous research on exchange interactions, current-induced spin torques and topological magneto-transport properties of spin textures, in this project we are aiming at the rigorous microscopic and ab-initio theory of magneto-transport properties and related dynamical effects in large-scale chiral magnetic textures. Specifically, we will (i) focus on the interplay between an applied electric field with exchange interactions and spin torques; (ii) uncover the transport properties of skyrmions with a particular focus on a novel family of chiral effects, (iii) reach into the dynamical regime of interactions, torques and transport of textures evolving in time. One of the main objectives of the project is the discovery of novel types of hybrid topologies due to interplay of real-space spin, electronic, and magnonic degrees of freedom in dynamical textures. Successful research in this direction is a strategic visionary goal of the project, which has the potential to change the scope of our perception of spin textures as topological particles, and bring the field of skyrmionics to a qualitatively new level with strong connections to the fields of topological materials, topological magnonics, open and driven quantum systems, and even string theory.

在过去的十年中，Skyrmions作为一类新的迷人的拓扑磁性粒子出现。与此同时，电子skyrmion相互作用，负责skyrmion输运和动力学的建模，面临着根本的困难，在解释现有的数据和治疗强自旋轨道耦合，绝缘，超导，甚至在最基本的化合物中的skyrmion的输运效应和动力学。因此，在该领域的未来进展，必须发展一个适当的理论，能够充分处理电子效应的Skyrmions，适当的手征孤子的纠缠动力学和拓扑性质。在我们前期对自旋织构的交换作用、电流感生自旋力矩和拓扑磁输运性质的研究的推动下，本项目旨在对大尺度手征磁织构的磁输运性质及其动力学效应进行严格的微观和从头算理论研究。具体来说，我们将（i）专注于交换相互作用和自旋扭矩之间的相互作用的电场;（ii）揭示skyrmions的输运性质，特别关注一个新的家庭的手征效应，（iii）达到动态制度的相互作用，扭矩和运输的纹理演变的时间。该项目的主要目标之一是发现新类型的混合拓扑结构，由于相互作用的真实空间自旋，电子和磁振自由度的动态纹理。在这个方向上的成功研究是该项目的一个战略性的有远见的目标，它有可能改变我们对自旋纹理作为拓扑粒子的感知范围，并将skyrmionics领域带到一个质的新水平，与拓扑材料，拓扑磁振子，开放和驱动量子系统，甚至弦理论领域有着密切的联系。