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Magnetic Fingerprints in an All-Organic Radical Molecular Break Junction
[Image: see text] Polycyclic aromatic hydrocarbons radicals are organic molecules with a nonzero total magnetic moment. Here, we report on charge-transport experiments with bianthracene-based radicals using a mechanically controlled break junction technique at low temperatures (6 K). The conductance...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2022
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9614975/ https://www.ncbi.nlm.nih.gov/pubmed/36206381 http://dx.doi.org/10.1021/acs.nanolett.2c02326 |
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author | Baum, Thomas Y. Fernández, Saleta Peña, Diego van der Zant, Herre S. J. |
author_facet | Baum, Thomas Y. Fernández, Saleta Peña, Diego van der Zant, Herre S. J. |
author_sort | Baum, Thomas Y. |
collection | PubMed |
description | [Image: see text] Polycyclic aromatic hydrocarbons radicals are organic molecules with a nonzero total magnetic moment. Here, we report on charge-transport experiments with bianthracene-based radicals using a mechanically controlled break junction technique at low temperatures (6 K). The conductance spectra demonstrate that the magnetism of the diradical is preserved in solid-state devices and that it manifests itself either in the form of a Kondo resonance or inelastic electron tunneling spectroscopy signature caused by spin-flip processes. The magnetic fingerprints depend on the exact configuration of the molecule in the junction; this picture is supported by reference measurements on a radical molecule with the same backbone but with one free spin, in which only Kondo anomalies are observed. The results show that the open-shell structures based on the bianthracene core are interesting systems to study spin–spin interactions in solid-state devices, and this may open the way to control them either electrically or by mechanical strain. |
format | Online Article Text |
id | pubmed-9614975 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-96149752022-10-29 Magnetic Fingerprints in an All-Organic Radical Molecular Break Junction Baum, Thomas Y. Fernández, Saleta Peña, Diego van der Zant, Herre S. J. Nano Lett [Image: see text] Polycyclic aromatic hydrocarbons radicals are organic molecules with a nonzero total magnetic moment. Here, we report on charge-transport experiments with bianthracene-based radicals using a mechanically controlled break junction technique at low temperatures (6 K). The conductance spectra demonstrate that the magnetism of the diradical is preserved in solid-state devices and that it manifests itself either in the form of a Kondo resonance or inelastic electron tunneling spectroscopy signature caused by spin-flip processes. The magnetic fingerprints depend on the exact configuration of the molecule in the junction; this picture is supported by reference measurements on a radical molecule with the same backbone but with one free spin, in which only Kondo anomalies are observed. The results show that the open-shell structures based on the bianthracene core are interesting systems to study spin–spin interactions in solid-state devices, and this may open the way to control them either electrically or by mechanical strain. American Chemical Society 2022-10-07 2022-10-26 /pmc/articles/PMC9614975/ /pubmed/36206381 http://dx.doi.org/10.1021/acs.nanolett.2c02326 Text en © 2022 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by/4.0/Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Baum, Thomas Y. Fernández, Saleta Peña, Diego van der Zant, Herre S. J. Magnetic Fingerprints in an All-Organic Radical Molecular Break Junction |
title | Magnetic Fingerprints
in an All-Organic Radical Molecular
Break Junction |
title_full | Magnetic Fingerprints
in an All-Organic Radical Molecular
Break Junction |
title_fullStr | Magnetic Fingerprints
in an All-Organic Radical Molecular
Break Junction |
title_full_unstemmed | Magnetic Fingerprints
in an All-Organic Radical Molecular
Break Junction |
title_short | Magnetic Fingerprints
in an All-Organic Radical Molecular
Break Junction |
title_sort | magnetic fingerprints
in an all-organic radical molecular
break junction |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9614975/ https://www.ncbi.nlm.nih.gov/pubmed/36206381 http://dx.doi.org/10.1021/acs.nanolett.2c02326 |
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