论文标题
磁性膜中界面dzyaloshinskii-moriya载体的界面内壁性手性和方向
In-plane Néel wall chirality and orientation of interfacial Dzyaloshinskii-Moriya vector in magnetic films
论文作者
论文摘要
界面的Dzyaloshinskii-Moriya相互作用（DMI）引起了人们的极大兴趣，因为它可以稳定薄膜中的手性自旋结构。验证界面DMI载体方向的实验仍然很少，部分原因是很难分离DMI的矢量成分。在这项研究中，分别将Fe/ni Bilayers和Co/ni多层分别沉积到Cu（001）和Pt（111）底物上。通过调整有效的各向异性，通过测量SRT两侧的域壁的自旋结构来探测自旋重新定向跃迁（SRT）。发现界面DMI足够强，可以稳定平面外磁性方案中的手性néel壁，而在平面内磁性磁化方案中观察到AchiralNéel壁。这些发现在实验上证实，即使在原子步骤的存在下，这些FCC（001）和面向FCC（111）方向的界面中，DMI载体的非平面成分也不重要。
The interfacial Dzyaloshinskii-Moriya interaction (DMI) is of great interest as it can stabilize chiral spin structures in thin films. Experiments verifying the orientation of the interfacial DMI vector remain rare, in part due to the difficulty of separating vector components of DMI. In this study, Fe/Ni bilayers and Co/Ni multilayers were deposited epitaxially onto Cu(001) and Pt(111) substrates, respectively. By tailoring the effective anisotropy, spin reorientation transitions (SRTs) are employed to probe the orientation of the DMI vector by measuring the spin structure of domain walls on both sides of the SRTs. The interfacial DMI is found to be sufficiently strong to stabilize chiral Néel walls in the out-of-plane magnetized regimes, while achiral Néel walls are observed in the in-plane magnetized regimes. These findings experimentally confirm that the out-of-plane component of the DMI vector is insignificant in these fcc(001) and fcc(111) oriented interfaces, even in the presence of atomic steps.
