Influence of band structure on ballistic transport revealed by molecular nanoprobe
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- In this study we characterize the tautomerization of HPc on Cu(111) as a charge-carrier-induced reversible one-electron process. An analysis of the bias-dependent tautomerization rate finds an energy threshold that corresponds to the energy of the N-H stretching mode. By using the tautomerization of the molecule as a detector for charge carrier transport in the so-called molecular nanoprobe (MONA) technique, we provide evidence for an inhomogeneous coupling between the fourfold-symmetric molecule and sixfold-symmetric surface. We conclude theIn this study we characterize the tautomerization of HPc on Cu(111) as a charge-carrier-induced reversible one-electron process. An analysis of the bias-dependent tautomerization rate finds an energy threshold that corresponds to the energy of the N-H stretching mode. By using the tautomerization of the molecule as a detector for charge carrier transport in the so-called molecular nanoprobe (MONA) technique, we provide evidence for an inhomogeneous coupling between the fourfold-symmetric molecule and sixfold-symmetric surface. We conclude the study by comparing the energy dependence of charge carrier transport on the Cu(111) to the Ag(111) surface. While the MONA technique is limited to the detection of hot-electron transport for Ag(111), our data reveal that the lower onset energy of the Cu surface state also allows for the detection of hot-hole transport. The influence of surface and bulk transport on the MONA technique is discussed.…
Autor(en): | Andreas Christ, Patrick Härtl, Patrick Kloster, Matthias Bode, Markus Leisegang |
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URN: | urn:nbn:de:bvb:20-opus-300855 |
Dokumentart: | Artikel / Aufsatz in einer Zeitschrift |
Institute der Universität: | Fakultät für Physik und Astronomie / Physikalisches Institut |
Sprache der Veröffentlichung: | Englisch |
Titel des übergeordneten Werkes / der Zeitschrift (Englisch): | Physical Review Research |
Erscheinungsjahr: | 2022 |
Band / Jahrgang: | 4 |
Heft / Ausgabe: | 4 |
Aufsatznummer: | 043016 |
Originalveröffentlichung / Quelle: | Physical Review Research 2022, 4(4):043016. DOI: 10.1103/PhysRevResearch.4.043016 |
DOI: | https://doi.org/10.1103/PhysRevResearch.4.043016 |
Allgemeine fachliche Zuordnung (DDC-Klassifikation): | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
Freie Schlagwort(e): | Cu(111); HPc; tautomerization |
Datum der Freischaltung: | 27.02.2023 |
Sammlungen: | Open-Access-Publikationsfonds / Förderzeitraum 2022 |
Lizenz (Deutsch): | CC BY: Creative-Commons-Lizenz: Namensnennung 4.0 International |