单原子离子
非弹性电子隧穿光谱
自旋(空气动力学)
密度泛函理论
凝聚态物理
原子单位
量子
量子隧道
磁矩
光谱学
方向(向量空间)
材料科学
化学
原子物理学
化学物理
物理
扫描隧道光谱
计算化学
量子力学
热力学
几何学
数学
作者
Neda Noei,Roberto Mozara,Ana María Herrero Montero,Sascha Brinker,Niklas Ide,Filipe S. M. Guimarães,A. I. Lichtenstein,Richard Berndt,Samir Lounis,Alexander Weismann
出处
期刊:Nano Letters
[American Chemical Society]
日期:2023-10-02
卷期号:23 (19): 8988-8994
被引量:1
标识
DOI:10.1021/acs.nanolett.3c02532
摘要
Harnessing the spin of single atoms is at the heart of quantum information nanotechnology based on magnetic concepts. By attaching single Co atoms to monatomic Cu chains, we demonstrate the ability to control the spin orientation by the atomic environment. Due to spin–orbit coupling (SOC), the spin is tilted by ≈58° from the surface normal toward the chain as evidenced by inelastic tunneling spectroscopy. These findings are reproduced by density functional theory calculations and have implications for Co atoms on pristine Cu(111), which are believed to be Kondo systems. Our quantum Monte Carlo calculations suggest that SOC suppresses the Kondo effect of Co atoms at chains and on the flat surface. Our work impacts the fundamental understanding of low-energy excitations in nanostructures on surfaces and demonstrates the ability to manipulate atomic-scale magnetic moments, which can have tremendous implications for quantum devices.
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