Artículo
Low-energy physics for an iron phthalocyanine molecule on Au(111)
Fecha de publicación:
05/2022
Editorial:
American Physical Society
Revista:
Physical Review B
ISSN:
2469-9950
e-ISSN:
2469-9969
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The system of an iron phthalocyanine molecule on the Au(111) surface has been studied recently due to its peculiar properties. In particular, several surprising results of scanning tunneling spectroscopy changing the position of the molecule and applying magnetic field can be explained by the non-Landau Fermi liquid state of a two-channel spin-1 Kondo model with anisotropy. The localized orbitals near the Fermi level are three, one of symmetry z2 and two (nearly) degenerate π orbitals of symmetry xz and yz. Previous studies using the numerical renormalization group neglected one of these orbitals to render the problem tractable. Here we investigate, using a slave-boson mean-field approximation, if the splitting S between π orbitals caused by spin-orbit coupling (SOC) justifies this approximation. We obtain an abrupt transition from a three-band regime to a two-band one at a value of S, which is about 1/3 of the atomic SOC for Fe, justifying the two-band model for the system.
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Articulos (UE-INN - NODO BARILOCHE)
Articulos de UNIDAD EJECUTORA INSTITUTO DE NANOCIENCIA Y NANOTECNOLOGIA - NODO BARILOCHE
Articulos de UNIDAD EJECUTORA INSTITUTO DE NANOCIENCIA Y NANOTECNOLOGIA - NODO BARILOCHE
Citación
Aligia, Armando Ángel; Low-energy physics for an iron phthalocyanine molecule on Au(111); American Physical Society; Physical Review B; 105; 20; 5-2022; 1-8
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