Energy Loss Triggered by Atomic-Scale Lateral Force

Loading...
Thumbnail Image
Access rights
© 2013 American Physical Society (APS). This is the accepted version of the following article: Federici Canova, Filippo ; Kawai, Shigeki ; de Capitani, Christian ; Kanno, Ken-ichi ; Glatzel, Thilo ; Such, Bartosz ; Foster, Adam S. ; Meyer, Ernst. 2013. Energy Loss Triggered by Atomic-Scale Lateral Force. Physical Review Letters. Volume 110, Issue 20. 203203/1-5. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.110.203203, which has been published in final form at http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.110.203203
Journal Title
Journal ISSN
Volume Title
School of Science | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2013
Major/Subject
Mcode
Degree programme
Language
en
Pages
203203/1-5
Series
Physical Review Letters, Volume 110, Issue 20
Abstract
We perform bimodal atomic force microscopy measurements on a Br-doped NaCl (001) surface to investigate the mechanisms behind frequency shift and energy dissipation contrasts. The peculiar pattern of the dissipated energy in the torsional channel, related to frictional processes, is increased at the positions of Br impurities, otherwise indistinguishable from Cl ions in the other measured channels. Our simulations reveal how the energy dissipates by the rearrangement of the tip apex and how the process is ultimately governed by lateral forces. Even the slightest change in lateral forces, induced by the presence of a Br impurity, is enough to trigger the apex reconstruction more often, thus increasing the dissipation contrast; the predicted dissipation pattern and magnitude are in good quantitative agreement with the measurements.
Description
Keywords
AFM, MD, Br-doped NaCl (001), atomic force microscopy measurements
Other note
Citation
Federici Canova, Filippo & Kawai, Shigeki & de Capitani, Christian & Kanno, Ken-ichi & Glatzel, Thilo & Such, Bartosz & Foster, Adam S. & Meyer, Ernst. 2013. Energy Loss Triggered by Atomic-Scale Lateral Force. Physical Review Letters. Volume 110, Issue 20. 203203/1-5. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.110.203203.