Kantorovich, LN;
Shluger, AL;
Stoneham, AM;
(2000)
Structure and spectroscopy of surface defects from scanning force spectroscopy: theoetical predictions.
Physical Review Letters
, 85
(18)
3845 - 3849.
10.1103/PhysRevLett.85.3846.
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Abstract
A possibility to study surface defects by combining noncontact scanning force microscopy (SFM) imaging with atomically resolved optical spectroscopy is demonstrated by modeling an impurity Cr3+ ion at the MgO(001) surface with a SFM tip. Using a combination of the atomistic simulation and the ab initio electronic structure calculations, we predict a topographic noncontact SFM image of the defect and show that its optical transitions can be either enhanced or suppressed depending on the tip atomistic structure and its position relative to the defect. These effects should allow identification of certain impurity species through competition between radiative and nonradiative transitions.
| Type: | Article |
|---|---|
| Title: | Structure and spectroscopy of surface defects from scanning force spectroscopy: theoetical predictions |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.85.3846 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.85.3846 |
| Language: | English |
| Additional information: | © 2000 The American Physical Society |
| Keywords: | DEFECTS, Force, Physics, PREDICTION, PREDICTIONS, spectroscopy, Structure, SURFACE, Surface defects |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices 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.ucl.ac.uk/id/eprint/24754 |
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