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 2201.11476cond-mat.mes-hall
收藏

非共线自旋电流对手性磁性织构的开关作用

Non-Collinear Spin Current for Switching of Chiral Magnetic Textures

Dongwook Go, Moritz Sallermann, Fabian R. Lux, Stefan Blügel, Olena Gomonay, Yuriy Mokrousov

摘要:

我们提出了非共线自旋电流的概念,它的自旋极化即使在非磁性晶体中也是随空间变化的。虽然通常假设自旋霍尔电流的自旋极化是均匀的,但不对称的局部晶体势通常允许自旋极化在空间上是非共线的。基于微观的考虑,我们证明,这种非共线的自旋霍尔电流可以观察到,例如在层状的可果美Mn $_3$ X(X = Ge,Sn)化合物。此外,通过参考原子自旋动力学模拟,我们表明,非共线的自旋电流可以用来切换的手性自旋纹理的Mn $_3$ X在一个确定的方式,即使在没有外部磁场。我们的理论预测可以很容易地在实验中得到验证,这将打开一个新的路线走向复杂的自旋结构的非共线反铁磁体的电控制。

英文摘要:

We propose a concept of non-collinear spin current, whose spin polarization varies in space even in non-magnetic crystals. While it is commonly assumed that the spin polarization of the spin Hall current is uniform, asymmetric local crystal potential generally allows the spin polarization to be non-collinear in space. Based on microscopic considerations we demonstrate that such non-collinear spin Hall currents can be observed for example in layered Kagome Mn$_3$X (X = Ge, Sn) compounds. Moreover, by referring to atomistic spin dynamics simulations we show that non-collinear spin currents can be used to switch the chiral spin texture of Mn$_3$X in a deterministic way even in the absence of an external magnetic field. Our theoretical prediction can be readily tested in experiments, which will open a novel route toward electric control of complex spin structures in non-collinear antiferromagnets.

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。

↑