期刊
PHYSICAL REVIEW LETTERS
卷 112, 期 2, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.112.026102
关键词
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资金
- Research Foundation-Flanders (FWO, Belgium)
- Flemish Concerted Action research program [GOA/09/006]
- Italian MIUR [RBAP115AYN]
- China Scholarship Council [2011624021]
- FWO
Single magnetic Co atoms are deposited on atomically thin NaCl films on Au(111). Two different adsorption sites are revealed by high-resolution scanning tunneling microscopy (STM), i.e., at Na and at Cl locations. Using density functional based simulations of the STM images, we show that the Co atoms substitute with either a Na or Cl atom of the NaCl surface, resulting in cationic and anionic Co dopants with a high thermal stability. The dependence of the magnetic coupling between neighboring Co atoms on their separation is investigated via spatially resolved measurement of the local density of states.
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