期刊
NANO LETTERS
卷 15, 期 8, 页码 5564-5568出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.5b02145
关键词
Atomic switch; atomic manipulation; scanning probe microscopy; density functional theory; insulating films; Au adatom
类别
资金
- EU [243421, 317485, 610446]
- ERC [291194]
- Leverhulme Trust [F/00 025/AQ]
- EPSRC [EP/L000202]
- EPSRC [EP/L000202/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/L000202/1] Funding Source: researchfish
By means of scanning probe microscopy we demonstrate that Au+ on NaCl films adsorbs in an embedded, slightly off-centered Cl-Cl bridge position and can be switched between two equivalent mirror-symmetric configurations using the attractive force exerted by a scanning probe tip. Density functional theory calculations demonstrate that the displacement of the Au atom from the centered position of the bridge configuration is accompanied by a large lifting of the closest Cl atom leading to significant changes in the local electrostatic field. Our findings suggest that Au can be used to toggle the local electrostatic field.
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