Ordering and interactions between Cl adatoms on Cu(111) and their influence on the local electronic properties as measured by STM and STS
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2017Access:
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SAMUEL TORSNEY, JOHN BOLAND, BORISLAV NAYDENOV, 'Ordering and interactions between Cl adatoms on Cu(111) and their influence on the local electronic properties as measured by STM and STS', 2017, Physical Review B;, 96;, 24;Download Item:
Abstract:
We present a scanning tunneling microscopy/spectroscopy study of compressed Cl adlayers on
Cu(111) under ultrahigh-vacuum conditions. We describe a rational scheme to assign Cl adatoms
to different surface sites. The dominant electronic state visible in scanning tunneling spectroscopy
(STS) corresponds to an anti-bonding interaction between the Cl adlayer and the copper surface.
This state was observed to be 200meV higher in energy at hcp sites compared to fcc sites, and it
is attributed to the greater charge transfer to Cl adatoms at hcp sites. Although there was no STS
signature associated with bridging sites, the presence of bridging Cl adatoms along the periphery
of fcc domains caused a shift in the energy of the interface state in the latter. These results shed
important light on the ordering and interaction between Cl adatoms on Cu(111) and their influence
of the local electronic structure of the surface.
Sponsor
Grant Number
European Union Framework Programme 7 (FP7)
FP7 ICT 318516
Science Foundation Ireland (SFI)
12/IA/1482
Author's Homepage:
http://people.tcd.ie/torsnesphttp://people.tcd.ie/naydenob
http://people.tcd.ie/jboland
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Series/Report no:
Physical Review B;96;
24;
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Full text availableKeywords:
Scanning tunneling microscopySubject (TCD):
Nanoscience & Materials , ADSORPTION , CHEMISORPTION , CHLORINE CHEMISORPTION , DISSOCIATIVE ADSORPTION , DOMAIN WALLS , ELECTRONIC-STRUCTURE , SCANNING TUNNELLING MICROSCOPY (STM) , SURFACE ELECTRONIC-STRUCTUREDOI:
http://dx.doi.org/10.1103/PhysRevB.96.245411ISSN:
2469-9950Metadata
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