Lima L S
Department of Physics, Federal Center for Technological Education of Minas Gerais, Belo Horizonte, MG, 30510-000, Brazil.
Sci Rep. 2021 Oct 14;11(1):20442. doi: 10.1038/s41598-021-99813-9.
Spin-transport and current-induced torques in ferromagnet heterostructures given by a ferromagnetic domain wall are investigated. Furthermore, the continuum spin conductivity is studied in a frustrated spin system given by the Heisenberg model with ferromagnetic in-chain interaction [Formula: see text] between nearest neighbors and antiferromagnetic next-nearest-neighbor in-chain interaction [Formula: see text] with aim to investigate the effect of the phase diagram of the critical ion single anisotropy [Formula: see text] as a function of [Formula: see text] on conductivity. We consider the model with the moderate strength of the frustrating parameter such that in-chain spin-spin correlations that are predominantly ferromagnetic. In addition, we consider two inter-chain couplings [Formula: see text] and [Formula: see text], corresponding to the two axes perpendicular to chain where ferromagnetic as well as antiferromagnetic interactions are taken into account.
研究了由铁磁畴壁给出的铁磁异质结构中的自旋输运和电流感应转矩。此外，在由海森堡模型给出的受挫自旋系统中研究了连续自旋电导率，该模型具有最近邻之间的铁磁链内相互作用[公式：见正文]和次近邻链内反铁磁相互作用[公式：见正文]，目的是研究临界离子单各向异性的相图作为[公式：见正文]的函数对电导率的影响。我们考虑具有适度强度的受挫参数的模型，使得链内自旋 - 自旋关联主要是铁磁的。此外，我们考虑两个链间耦合[公式：见正文]和[公式：见正文]，它们对应于垂直于链的两个轴，其中考虑了铁磁以及反铁磁相互作用。
