超薄金属膜手性标志的控制:Bi at 2Ni/Co

IF 2.9 4区 物理与天体物理 Q2 OPTICS Journal of Nonlinear Optical Physics & Materials Pub Date : 2023-06-26 DOI:10.1088/2515-7639/acdf22
S. Gallego
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引用次数: 0

摘要

接近效应可用于引入与重金属接触的磁性金属层中的自旋轨道相互作用。这一众所周知的现象已经被用来在Co超薄膜上诱导手性自旋织构,其中左手性或右手性可以通过HM层的位置来调节,这是基于薄膜反转对称性的破坏和可加性界面效应的存在。在这里,我们展示了引入进一步对称性减少的结构和化学特征可以添加到这个场景中,最终实现对独特缠绕感定义的控制。我们将重点放在2Ni/Co异质结构和Bi(一种很少被探索的大尺寸HM金属)上,将沿表面法线的化学不均匀铁磁堆栈与面内不对称结合起来。我们的结果与2Co层与Ir的结合进行了对比。
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Towards control of the chirality sign at ultrathin metal films: Bi at 2Ni/Co
Proximity effects can be used to introduce spin–orbit interactions in magnetic metallic layers in contact to a heavy metal (HM). This well known phenomenon has been exploited to induce chiral spin textures at Co ultrathin films, where the left- or right- handedness can be tuned by the HM layer position, based on the broken inversion symmetry of the film and the existence of an additive interface effect. Here we show that structural and chemical features introducing further symmetry reductions can be added to this scenario ultimately enabling control over the definition of a unique winding sense. We focus on 2Ni/Co heterostructures and Bi, a scarcely explored HM metal of large size, to combine a chemically inhomogeneous ferromagnetic stack along the normal to the surface with in-plane asymmetries. Our results are contrasted to 2Co layers combined with Ir.
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来源期刊
CiteScore
3.00
自引率
48.10%
发文量
53
审稿时长
3 months
期刊介绍: This journal is devoted to the rapidly advancing research and development in the field of nonlinear interactions of light with matter. Topics of interest include, but are not limited to, nonlinear optical materials, metamaterials and plasmonics, nano-photonic structures, stimulated scatterings, harmonic generations, wave mixing, real time holography, guided waves and solitons, bistabilities, instabilities and nonlinear dynamics, and their applications in laser and coherent lightwave amplification, guiding, switching, modulation, communication and information processing. Original papers, comprehensive reviews and rapid communications reporting original theories and observations are sought for in these and related areas. This journal will also publish proceedings of important international meetings and workshops. It is intended for graduate students, scientists and researchers in academic, industrial and government research institutions.
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