Pentacene adsorbed on the Cu(119) vicinal surface forms long-range ordered chain structures. Photoemission spectroscopy measurements and ab initio density functional theory simulations provide consistent evidences that pentacene molecular orbitals mix with the copper bands, giving rise to interaction states localized at the interface. Angular-resolved and polarization dependent photoemission spectroscopy shows that most of the pentacene derived intensity is strongly dichroic. The symmetry of the molecular states of the free pentacene molecules is reduced upon adsorption on Cu(119), as a consequence of the molecule-metal interaction. Theoretical results show a redistribution of the charge density in pi molecular states close to the Fermi level, consistent with the photoemission intensities (density of states) and polarization dependence (orbital symmetry).

Symmetry lowering of pentacene molecular states interacting with a Cu surface / Chiara, Baldacchini; Mariani, Carlo; Betti, Maria Grazia; Ivana, Vobornik; Jun, Fujii; Emilia, Annese; Giorgio, Rossi; Andrea, Ferretti; Arrigo, Calzolari; Rosa Di, Felice; Alice, Ruini; Elisa, Molinari. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - 76:24(2007), pp. 245430-1-245430-7. [10.1103/physrevb.76.245430]

Symmetry lowering of pentacene molecular states interacting with a Cu surface

MARIANI, CARLO;BETTI, Maria Grazia;
2007

Abstract

Pentacene adsorbed on the Cu(119) vicinal surface forms long-range ordered chain structures. Photoemission spectroscopy measurements and ab initio density functional theory simulations provide consistent evidences that pentacene molecular orbitals mix with the copper bands, giving rise to interaction states localized at the interface. Angular-resolved and polarization dependent photoemission spectroscopy shows that most of the pentacene derived intensity is strongly dichroic. The symmetry of the molecular states of the free pentacene molecules is reduced upon adsorption on Cu(119), as a consequence of the molecule-metal interaction. Theoretical results show a redistribution of the charge density in pi molecular states close to the Fermi level, consistent with the photoemission intensities (density of states) and polarization dependence (orbital symmetry).
2007
01 Pubblicazione su rivista::01a Articolo in rivista
Symmetry lowering of pentacene molecular states interacting with a Cu surface / Chiara, Baldacchini; Mariani, Carlo; Betti, Maria Grazia; Ivana, Vobornik; Jun, Fujii; Emilia, Annese; Giorgio, Rossi; Andrea, Ferretti; Arrigo, Calzolari; Rosa Di, Felice; Alice, Ruini; Elisa, Molinari. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - 76:24(2007), pp. 245430-1-245430-7. [10.1103/physrevb.76.245430]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/362571
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