Spin decoherence of magnetic atoms on surfaces
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Título: | Spin decoherence of magnetic atoms on surfaces |
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Autor/es: | Delgado Acosta, Fernando | Fernández-Rossier, Joaquín |
Grupo/s de investigación o GITE: | Grupo de Nanofísica |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Física Aplicada |
Palabras clave: | Decoherence | Relaxation | Kondo | Adatoms | Spin–phonon |
Área/s de conocimiento: | Física de la Materia Condensada |
Fecha de publicación: | feb-2017 |
Editor: | Elsevier |
Cita bibliográfica: | Progress in Surface Science. 2017, 92(1): 40-82. doi:10.1016/j.progsurf.2016.12.001 |
Resumen: | We review the problem of spin decoherence of magnetic atoms deposited on a surface. Recent breakthroughs in scanning tunnelling microscopy (STM) make it possible to probe the spin dynamics of individual atoms, either isolated or integrated in nanoengineered spin structures. Transport pump and probe techniques with spin polarized tips permit measuring the spin relaxation time T1T1, while novel demonstration of electrically driven STM single spin resonance has provided a direct measurement of the spin coherence time T2T2 of an individual magnetic adatom. Here we address the problem of spin decoherence from the theoretical point of view. First we provide a short general overview of decoherence in open quantum systems and we discuss with some detail ambiguities that arise in the case of degenerate spectra, relevant for magnetic atoms. Second, we address the physical mechanisms that allows probing the spin coherence of magnetic atoms on surfaces. Third, we discuss the main spin decoherence mechanisms at work on a surface, most notably, Kondo interaction, but also spin–phonon coupling and dephasing by Johnson noise. Finally, we briefly discuss the implications in the broader context of quantum technologies. |
Patrocinador/es: | JFR acknowledges financial supported by MEC-Spain (FIS2013-47328-C2-2-P) and Generalitat Valenciana (ACOMP/2010/070), Prometeo. This work is funded by ERDF funds through the Portuguese Operational Program for Competitiveness and Internationalization COMPETE 2020, and National Funds through FCT – The Portuguese Foundation for Science and Technology, under the project ‘‘PTDC/FIS-N AN/4662/2014” (016656). FD acknowledges funding by the Ministerio de Economía y Competitividad (MINECO, Spain), with grant MAT2015-66888-C3-2-R., and Gobierno Vasco by grant IT986-16. |
URI: | http://hdl.handle.net/10045/63000 |
ISSN: | 0079-6816 (Print) | 1878-4240 (Online) |
DOI: | 10.1016/j.progsurf.2016.12.001 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2016 Elsevier Ltd. |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1016/j.progsurf.2016.12.001 |
Aparece en las colecciones: | INV - Grupo de Nanofísica - Artículos de Revistas |
Archivos en este ítem:
Archivo | Descripción | Tamaño | Formato | |
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2017_Delgado_Fernandez_ProgSurfSci_final.pdf | Versión final (acceso restringido) | 1,55 MB | Adobe PDF | Abrir Solicitar una copia |
2017_Delgado_Fernandez_ProgSurfSci_preprint.pdf | Preprint (acceso abierto) | 1,19 MB | Adobe PDF | Abrir Vista previa |
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