Atomically resolved magnetic structure of a Gd-Au surface alloy
Atomically resolved magnetic structure of a Gd-Au surface alloy
复制标题
DOI：
10.1103/physrevb.99.174419
复制
发表时间：
2019-05-21
影响因子：
3.7
通讯作者：
Wiesendanger, Roland
中科院分区：
文献类型：
--
作者：
Bazarnik, Maciej;Abadia, Mikel;Wiesendanger, Roland
通过自旋极化扫描隧道显微镜，对Au(111)上单层厚的GdAu₂表面合金的磁结构进行了原子级的研究。自旋分辨隧道谱结合密度泛函理论计算，揭示了表面合金内Gd和Au原子位点的局域自旋极化。此外，还展示了位错线对原子尺度磁结构以及局域矫顽场强的影响。
The magnetic structure of a monolayer-thick GdAu2 surface alloy on Au(111) has been investigated down to the atomic level by spin-polarized scanning tunneling microscopy. Spin-resolved tunneling spectroscopy combined with density-functional theory calculations reveal the local spin polarization of both Gd and Au atomic sites within the surface alloy. Moreover, the impact of dislocation lines on the atomic-scale magnetic structure as well as on the local coercive field strength is demonstrated.