A single layer of flat-lying iron phthalocyanine (FePc) molecules assembled on graphene grown on Ir(111) preserves the magnetic moment, as deduced by X-ray magnetic circular dichroism from the Fe L2,3 edges. Furthermore, the FePc molecules in contact with the graphene buffer layer exhibit an enhancement of the magnetic anisotropy, with emergence of an in-plane easy magnetic axis, reflected by an increased orbital moment of the FePc molecules in contact with the C atoms in the graphene sheet. The origin of the increased magnetic anisotropy is discussed, considering the absence of electronic state hybridization, and the breaking of symmetry upon FePc adsorption on graphene.

Graphene-Induced Magnetic Anisotropy of a Two-Dimensional Iron Phthalocyanine Network / Lisi, Simone; Gargiani, Pierluigi; Scardamaglia, Mattia; Brookes, Nicholas B; Sessi, Violetta; Mariani, Carlo; Betti, Maria Grazia. - In: THE JOURNAL OF PHYSICAL CHEMISTRY LETTERS. - ISSN 1948-7185. - 6:9(2015), pp. 1690-1695. [10.1021/acs.jpclett.5b00260]

Graphene-Induced Magnetic Anisotropy of a Two-Dimensional Iron Phthalocyanine Network

LISI, SIMONE;GARGIANI, PIERLUIGI;SCARDAMAGLIA, MATTIA;MARIANI, CARLO;BETTI, Maria Grazia
2015

Abstract

A single layer of flat-lying iron phthalocyanine (FePc) molecules assembled on graphene grown on Ir(111) preserves the magnetic moment, as deduced by X-ray magnetic circular dichroism from the Fe L2,3 edges. Furthermore, the FePc molecules in contact with the graphene buffer layer exhibit an enhancement of the magnetic anisotropy, with emergence of an in-plane easy magnetic axis, reflected by an increased orbital moment of the FePc molecules in contact with the C atoms in the graphene sheet. The origin of the increased magnetic anisotropy is discussed, considering the absence of electronic state hybridization, and the breaking of symmetry upon FePc adsorption on graphene.
2015
XAS; XMCD; iridium; organometallic; spin network; surface
01 Pubblicazione su rivista::01a Articolo in rivista
Graphene-Induced Magnetic Anisotropy of a Two-Dimensional Iron Phthalocyanine Network / Lisi, Simone; Gargiani, Pierluigi; Scardamaglia, Mattia; Brookes, Nicholas B; Sessi, Violetta; Mariani, Carlo; Betti, Maria Grazia. - In: THE JOURNAL OF PHYSICAL CHEMISTRY LETTERS. - ISSN 1948-7185. - 6:9(2015), pp. 1690-1695. [10.1021/acs.jpclett.5b00260]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/788396
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