Teobaldi, G;
Lammle, K;
Trevethan, T;
Watkins, M;
Schwarz, A;
Wiesendanger, R;
Shluger, AL;
(2011)
Chemical Resolution at Ionic Crystal Surfaces Using Dynamic Atomic Force Microscopy with Metallic Tips.
PHYS REV LETT
, 106
(21)
, Article 216102. 10.1103/PhysRevLett.106.216102.
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Abstract
We demonstrate that well prepared and characterized Cr tips can provide atomic resolution on the bulk NaCl(001) surface with dynamic atomic force microscopy in the noncontact regime at relatively large tip-sample separations. At these conditions, the surface chemical structure can be resolved yet tip-surface instabilities are absent. Our calculations demonstrate that chemical identification is unambiguous, because the interaction is always largest above the anions. This conclusion is generally valid for other polar surfaces, and can thus provide a new practical route for straightforward interpretation of atomically resolved images.
| Type: | Article |
|---|---|
| Title: | Chemical Resolution at Ionic Crystal Surfaces Using Dynamic Atomic Force Microscopy with Metallic Tips |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.106.216102 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.106.216102 |
| Language: | English |
| Additional information: | © 2011 American Physical Society |
| Keywords: | WORK FUNCTION |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/1314302 |
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