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Influence of band structure on ballistic transport revealed by molecular nanoprobe
Please always quote using this URN: urn:nbn:de:bvb:20-opus-300855
- 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.…
Author: | Andreas Christ, Patrick Härtl, Patrick Kloster, Matthias Bode, Markus Leisegang |
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URN: | urn:nbn:de:bvb:20-opus-300855 |
Document Type: | Journal article |
Faculties: | Fakultät für Physik und Astronomie / Physikalisches Institut |
Language: | English |
Parent Title (English): | Physical Review Research |
Year of Completion: | 2022 |
Volume: | 4 |
Issue: | 4 |
Article Number: | 043016 |
Source: | Physical Review Research 2022, 4(4):043016. DOI: 10.1103/PhysRevResearch.4.043016 |
DOI: | https://doi.org/10.1103/PhysRevResearch.4.043016 |
Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
Tag: | Cu(111); HPc; tautomerization |
Release Date: | 2023/02/27 |
Collections: | Open-Access-Publikationsfonds / Förderzeitraum 2022 |
Licence (German): | CC BY: Creative-Commons-Lizenz: Namensnennung 4.0 International |