arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2103.14982cond-mat.mes-hall
收藏

利用Dzyaloshinsky-Moriya相互作用和磁场计算双子格反铁磁体Néel矢量的Zeeman项

Zeeman term for the Néel vector in a two sublattice antiferromagnet using Dzyaloshinsky-Moriya interaction and magnetic field

Sayak Dasgupta, Ji Zou

摘要:

本文从理论上研究了两个亚晶格反铁磁体中孤子在外界微扰下的动力学行为,重点研究了Dzyaloshinsky-Moriya(DM)相互作用的影响。为此,我们构建了一个微场论的反铁磁体的存在下的外部磁场,DM相互作用,和自旋转移力矩。特别地,当DM相互作用存在时,外部磁场和自旋电流以类塞曼的方式耦合到Néel矢量,从而有效地驱动不同维度的反铁磁孤子.此外,我们还研究了局域晶格的应变效应。它可以作为Néel场惯性和动力学性质的外部处理。我们的发现可能会在反铁磁自旋电子学中找到应用。

英文摘要:

We theoretically investigate the dynamics of solitons in two sublattice antiferromagnets under external perturbations, focusing on the effect of Dzyaloshinsky-Moriya (DM) interactions. To this end, we construct a micromagnetic field theory for the antiferromagnet in the presence of the external magnetic field, DM interaction, and spin-transfer torque. In particular, we show external magnetic field and spin current couple to Néel vector in a Zeeman-like manner when DM interactions present, which can be used to efficiently drive antiferromagnetic solitons of different dimensions. Besides, we study the effect of straining the local lattice. It can serve as an external handle on the Néel field inertia and thus dynamical properties. Our findings may find applications in antiferromagnetic spintronics.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑