Enhanced conductance of molecular states at interstitial sites

Arrays of phthalocyanine molecules on Pb(100) are investigated with scanning tunneling microscopy. Maps of the differential conductance exhibit drastic changes as the sample voltage is being varied. Maximal conductances are observed at positions between the molecules mimicking bonding states. Howeve...

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Main Authors: Jan Homberg, Manuel Gruber, Alexander Weismann, Richard Berndt
Format: Article
Language:English
Published: IOP Publishing 2023-01-01
Series:New Journal of Physics
Subjects:
Online Access:https://doi.org/10.1088/1367-2630/acb4b6
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author Jan Homberg
Manuel Gruber
Alexander Weismann
Richard Berndt
author_facet Jan Homberg
Manuel Gruber
Alexander Weismann
Richard Berndt
author_sort Jan Homberg
collection DOAJ
description Arrays of phthalocyanine molecules on Pb(100) are investigated with scanning tunneling microscopy. Maps of the differential conductance exhibit drastic changes as the sample voltage is being varied. Maximal conductances are observed at positions between the molecules mimicking bonding states. However, the maxima are shown to result from a superposition of non-interacting states. We expect that this effect may be observed from many other molecules.
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spelling doaj.art-47b480f70c8c4ff795b410fd431f1e742023-08-09T14:12:07ZengIOP PublishingNew Journal of Physics1367-26302023-01-0125101302910.1088/1367-2630/acb4b6Enhanced conductance of molecular states at interstitial sitesJan Homberg0Manuel Gruber1https://orcid.org/0000-0002-8353-4651Alexander Weismann2Richard Berndt3https://orcid.org/0000-0003-1165-9065Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität zu Kiel , 24098 Kiel, GermanyFaculty of Physics and CENIDE, University of Duisburg-Essen , 47057 Duisburg, GermanyInstitut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität zu Kiel , 24098 Kiel, GermanyInstitut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität zu Kiel , 24098 Kiel, GermanyArrays of phthalocyanine molecules on Pb(100) are investigated with scanning tunneling microscopy. Maps of the differential conductance exhibit drastic changes as the sample voltage is being varied. Maximal conductances are observed at positions between the molecules mimicking bonding states. However, the maxima are shown to result from a superposition of non-interacting states. We expect that this effect may be observed from many other molecules.https://doi.org/10.1088/1367-2630/acb4b6scanning tunneling microscopymolecular arraysadsorbed moleculesphthalocyanin
spellingShingle Jan Homberg
Manuel Gruber
Alexander Weismann
Richard Berndt
Enhanced conductance of molecular states at interstitial sites
New Journal of Physics
scanning tunneling microscopy
molecular arrays
adsorbed molecules
phthalocyanin
title Enhanced conductance of molecular states at interstitial sites
title_full Enhanced conductance of molecular states at interstitial sites
title_fullStr Enhanced conductance of molecular states at interstitial sites
title_full_unstemmed Enhanced conductance of molecular states at interstitial sites
title_short Enhanced conductance of molecular states at interstitial sites
title_sort enhanced conductance of molecular states at interstitial sites
topic scanning tunneling microscopy
molecular arrays
adsorbed molecules
phthalocyanin
url https://doi.org/10.1088/1367-2630/acb4b6
work_keys_str_mv AT janhomberg enhancedconductanceofmolecularstatesatinterstitialsites
AT manuelgruber enhancedconductanceofmolecularstatesatinterstitialsites
AT alexanderweismann enhancedconductanceofmolecularstatesatinterstitialsites
AT richardberndt enhancedconductanceofmolecularstatesatinterstitialsites