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Title:Spin and orbital configuration of metal phthalocyanine chains assembled on the Au(110) surface
Authors:ID Pierluigi, Gargiani (Author)
ID Rossi, Giorgio (Author)
ID Biagi, Roberto (Author)
ID Corradini, Valdis (Author)
ID Pedio, Maddalena (Author)
ID Fortuna, Sara (Author)
ID Calzolari, Arrigo (Author)
ID Fabris, Stefano (Author)
ID Cezar, Julio Criginski (Author)
ID Brookes, N. B. (Author)
ID Betti, Maria Grazia (Author)
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Work type:Not categorized
Typology:1.01 - Original Scientific Article
Organization:UNG - University of Nova Gorica
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 L2,3 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.
Keywords:phthalocyanine, Au(110), gold, self-assembly, pattern, configuration, density functional theory, DFT, CuPc, FePc
Year of publishing:2013
Number of pages:11
PID:20.500.12556/RUNG-2673 New window
COBISS.SI-ID:4540923 New window
DOI:10.1103/PhysRevB.87.165407 New window
Publication date in RUNG:12.10.2016
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Record is a part of a journal

Title:Physical Review B
Shortened title:Phys. Rev. B
Publisher:American Physical Society
Year of publishing:2013