Orbital-selective spin excitation of a magnetic porphyrin
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http://hdl.handle.net/10045/97128
Títol: | Orbital-selective spin excitation of a magnetic porphyrin |
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Autors: | Rubio-Verdú, Carmen | Sarasola, Ane | Choi, Deung-Jang | Majzik, Zsolt | Ebeling, René | Calvo, M. Reyes | Ugeda, Miguel M. | Garcia-Lekue, Aran | Sánchez-Portal, Daniel | Pascual, Jose Ignacio |
Grups d'investigació o GITE: | Grupo de Nanofísica |
Centre, Departament o Servei: | Universidad de Alicante. Departamento de Física Aplicada |
Paraules clau: | Scattering | Single atom | Magnetism | Inelastic |
Àrees de coneixement: | Física de la Materia Condensada |
Data de publicació: | 3-de maig-2018 |
Editor: | Springer Nature |
Citació bibliogràfica: | Communications Physics. 2018, 1:15. doi:10.1038/s42005-018-0015-6 |
Resum: | Scattering of electrons by localized spins is the ultimate process enabling detection and control of the magnetic state of a spin-doped material. At the molecular scale, scattering is mediated by the orbitals hosting the spin. Here we report the selective excitation of a molecular spin by tunneling through different molecular orbitals. Spatially resolved tunneling spectra on iron-porphyrins reveal that the inelastic spin excitation extends beyond the iron site, changing shape and symmetry along the molecule. Combining density functional theory simulations with a phenomenological scattering model, we show that the extension and lineshape of the inelastic signal are due to excitation pathways assisted by different frontier orbitals. By selecting the intramolecular site for electron injection, the relative weight of iron and pyrrole orbitals in the tunneling process is modified. Thus, the excitation mechanism, reflected by its spectral lineshape, depends on the degree of localization and energy alignment of the chosen molecular orbital. |
Patrocinadors: | This work has been funded by the COST 15128 Molecular Spintronics project, by Marie Curie IF ARTE, by the Spanish Ministerio de Economía y Competitividad (MINECO) through the cooperative grant No. MAT2016-78293 and grant No. FIS2016-75862-P, and by the Basque Government (Dep. Industry, Grant PI-2015-1-42, Dep. Education, Grant PI-2016-1-27 and Grant IT-756-13), the EU project PAMS (610446), and the European Regional Development Fund (ERDF). |
URI: | http://hdl.handle.net/10045/97128 |
ISSN: | 2399-3650 |
DOI: | 10.1038/s42005-018-0015-6 |
Idioma: | eng |
Tipus: | info:eu-repo/semantics/article |
Drets: | Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
Revisió científica: | si |
Versió de l'editor: | https://doi.org/10.1038/s42005-018-0015-6 |
Apareix a la col·lecció: | INV - Grupo de Nanofísica - Artículos de Revistas |
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2018_Rubio-Verdu_etal_CommunicationsPhysics.pdf | 1,03 MB | Adobe PDF | Obrir Vista prèvia | |
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