Reversal of atomic contrast in scanning probe microscopy on (111) metal surfaces
Result description
We studied the origin of atomic contrast on Cu(111) and Pt(111) surfaces probed by a non-contact atomic force microscope and scanning tunnelling microscope. First-principles simulations of the interaction between the atoms of the scanning tip and those of the probed surface showed a dependence of the resulting contrast on the tip-sample distance and reveal a close relation between contrast changes and relaxation of atomic positions in both the tip and the sample. Contrast reversion around the distance where the short-range attractive atomic force reached its maximum was predicted for both types of microscopies. We also demonstrated a relation between the maximal attractive force in a force-distance atomic force spectroscopy and the chemical identity ofthe apex atom of the imaging tip.
Keywords
atomic force microscopymetallic surfacesatomic contrastscanning tunneling microscopy
The result's identifiers
Result code in IS VaVaI
Result on the web
DOI - Digital Object Identifier
Alternative languages
Result language
angličtina
Original language name
Reversal of atomic contrast in scanning probe microscopy on (111) metal surfaces
Original language description
We studied the origin of atomic contrast on Cu(111) and Pt(111) surfaces probed by a non-contact atomic force microscope and scanning tunnelling microscope. First-principles simulations of the interaction between the atoms of the scanning tip and those of the probed surface showed a dependence of the resulting contrast on the tip-sample distance and reveal a close relation between contrast changes and relaxation of atomic positions in both the tip and the sample. Contrast reversion around the distance where the short-range attractive atomic force reached its maximum was predicted for both types of microscopies. We also demonstrated a relation between the maximal attractive force in a force-distance atomic force spectroscopy and the chemical identity ofthe apex atom of the imaging tip.
Czech name
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Czech description
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Classification
Type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Physics-Condensed Matter
ISSN
0953-8984
e-ISSN
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Volume of the periodical
24
Issue of the periodical within the volume
08
Country of publishing house
GB - UNITED KINGDOM
Number of pages
7
Pages from-to
"084003/1"-"084003/7"
UT code for WoS article
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EID of the result in the Scopus database
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Basic information
Result type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP
BM - Solid-state physics and magnetism
Year of implementation
2012