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Spin and orbital configuration of metal phthalocyanine chains assembled on the Au(110) surface (Articolo in rivista)

Type

Label

Spin and orbital configuration of metal phthalocyanine chains assembled on the Au(110) surface (Articolo in rivista) (literal)

Anno

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Alternative label

Gargiani, P; Rossi, G; Biagi, R; Corradini, V; Pedio, M; Fortuna, S; Calzolari, A; Fabris, S; Cezar, JC; Brookes, NB; Betti, MG (2013)
Spin and orbital configuration of metal phthalocyanine chains assembled on the Au(110) surface
in Physical review. B, Condensed matter and materials physics; The American Physical Society, College Park, MD 20740-3844 (Stati Uniti d'America)
(literal)

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Gargiani, P; Rossi, G; Biagi, R; Corradini, V; Pedio, M; Fortuna, S; Calzolari, A; Fabris, S; Cezar, JC; Brookes, NB; Betti, MG (literal)

Pagina inizio

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Rivista

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Note

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Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy Univ Milan, Dipartimento Fis, I-20133 Milan, Italy CNR IOM TASC, I-34149 Trieste, Italy Univ Modena & Reggio Emilia, Dipartimento Sci Fis Informat & Matemat, I-41125 Modena, Italy CNR IOM DEMOCRITOS, Theory Elettra Grp, I-34149 Trieste, Italy European Synchrotron Radiat Facil, F-38043 Grenoble 9, France (literal)

Titolo

Spin and orbital configuration of metal phthalocyanine chains assembled on the Au(110) surface (literal)

Abstract

The spin and orbital configuration of magnetic metal phthalocyanines (MPcs) deposited on metallic substrates are strongly influenced by the rehybridization of the molecular states with the underlying metal. FePc, CoPc, and CuPc isolated molecules are archetypal systems to investigate the interrelationship between magnetic moments and orbital symmetry after deposition on a metallic substrate. MPcs form long-range ordered chains self-assembled along the reconstructed channels of the Au(110) surface. X-ray magnetic circular dichroism from the L-2,L-3 absorption edges of Fe, Co, and Cu shows that the orbital and spin configuration are strongly modified upon adsorption on the Au(110) surface if the orbitals responsible of the magnetic moment are involved in the interaction process. The magnetic moment for a single layer of molecular chains is completely quenched for the CoPc molecules, fully preserved for the CuPc and reduced for the FePc ones. The modified magnetic configuration is confined to the very interface layer, i.e., to the MPc molecules bound to the metal substrate up to the compact packing of the single layer. The different response can be rationalized in terms of the symmetry/orientation of the metal-ion d states interacting with the substrate states, as indicated by density functional theory calculations in agreement with experimental findings. (literal)

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