Competition between quantum spin tunneling and Kondo effect
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http://hdl.handle.net/10045/63067
Títol: | Competition between quantum spin tunneling and Kondo effect |
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Autors: | Jacob, David | Fernández-Rossier, Joaquín |
Grups d'investigació o GITE: | Grupo de Nanofísica |
Centre, Departament o Servei: | Universidad de Alicante. Departamento de Física Aplicada |
Paraules clau: | Quantum spin tunneling | Kondo effect |
Àrees de coneixement: | Física de la Materia Condensada |
Data de publicació: | d’octubre-2016 |
Editor: | Springer Berlin Heidelberg |
Citació bibliogràfica: | The European Physical Journal B. 2016, 89:210. doi:10.1140/epjb/e2016-70402-2 |
Resum: | Quantum spin tunneling and Kondo effect are two very different quantum phenomena that produce the same effect on quantized spins, namely, the quenching of their magnetization. However, the nature of this quenching is very different so that quantum spin tunneling and Kondo effect compete with each other. Importantly, both quantum spin tunneling and Kondo effect produce very characteristic features in the spectral function that can be measured by means of single spin scanning tunneling spectroscopy and allows to probe the crossover from one regime to the other. We model this crossover, and the resulting changes in transport, using a non-perturbative treatment of a generalized Anderson model including magnetic anisotropy that leads to quantum spin tunneling. We predict that, at zero magnetic field, integer spins can feature a split-Kondo peak driven by quantum spin tunneling. |
Patrocinadors: | JFR acknowledges financial support by MEC-Spain (FIS2013 47328 C2 2 P) and Generalitat Valenciana (ACOMP 2010 070), Prometeo. |
URI: | http://hdl.handle.net/10045/63067 |
ISSN: | 1434-6028 (Print) | 1434-6036 (Online) |
DOI: | 10.1140/epjb/e2016-70402-2 |
Idioma: | eng |
Tipus: | info:eu-repo/semantics/article |
Drets: | © The Author(s) 2016. This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
Revisió científica: | si |
Versió de l'editor: | http://dx.doi.org/10.1140/epjb/e2016-70402-2 |
Apareix a la col·lecció: | INV - Grupo de Nanofísica - Artículos de Revistas |
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