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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Origin of C60 surface reconstruction resolved by atomic force microscopy
AU - Forcieri, Leonardo
AU - Taylor, Simon
AU - Moriarty, Philip
AU - Jarvis, Samuel
N1 - © 2021 American Physical Society
PY - 2021/11/22
Y1 - 2021/11/22
N2 - Surface adsorption of C60 affects its chemical and electronic properties. Numerous studies have reported observation of bright and dark fullerenes on metal surfaces that suggest extensive surface reconstruction; however, the underpinning mechanism of the reconstruction remains under debate. Here we report tip-functionalized noncontact atomic force microscope measurements which unambiguously reveal that C60 fullerenes adsorb with three well-defined adsorption heights on the Cu(111) surface, consistent with theoretical reports of top-layer hollow sites, single-atom vacancies, and surface nanopits. Using single-molecule resolution Δf(z) measurements we identify well-defined adsorption heights specific to each site, confirming the presence of a complex vacancy model for C60 monolayers on metal surfaces.
AB - Surface adsorption of C60 affects its chemical and electronic properties. Numerous studies have reported observation of bright and dark fullerenes on metal surfaces that suggest extensive surface reconstruction; however, the underpinning mechanism of the reconstruction remains under debate. Here we report tip-functionalized noncontact atomic force microscope measurements which unambiguously reveal that C60 fullerenes adsorb with three well-defined adsorption heights on the Cu(111) surface, consistent with theoretical reports of top-layer hollow sites, single-atom vacancies, and surface nanopits. Using single-molecule resolution Δf(z) measurements we identify well-defined adsorption heights specific to each site, confirming the presence of a complex vacancy model for C60 monolayers on metal surfaces.
U2 - 10.1103/PhysRevB.104.205428
DO - 10.1103/PhysRevB.104.205428
M3 - Journal article
VL - 104
JO - Physical Review B: Condensed Matter and Materials Physics
JF - Physical Review B: Condensed Matter and Materials Physics
SN - 1098-0121
IS - 20
M1 - 205428
ER -