Quadrupolar XMCD at the Fe K -edge in Fe phthalocyanine film on Au: Insight into the magnetic ground state

Bartolomé, J. (Universidad de Zaragoza) ; Bartolomé, F. (Universidad de Zaragoza) ; Figueroa, A.I. ; Bunau, O. ; Schuller, I.K. ; Gredig, T. ; Wilhelm, F. ; Rogalev, A. ; Krüger, P. ; Natoli, C.R.

Resumen: The observation of an anomalous quadrupolar signal in x-ray magnetic circular dichroism (XMCD) at the Fe K-edge of iron phthalocyanine (FePc) films is reported. All ground states previously suggested for FePc are incompatible with the experimental data. Based on ab initio molecular orbital multiplet calculations of the isolated FePc molecule, we propose a model for the magnetic ground state of the FePc film that explains the XMCD data and reproduces the observed values of the orbital moments in the perpendicular and planar directions.

Idioma: Inglés

DOI: 10.1103/PhysRevB.91.220401

Año: 2015

Publicado en: Physical Review B 91, 22 (2015), 220401 [5 pp]
ISSN: 1098-0121

Factor impacto JCR: 3.718 (2015)

Categ. JCR: PHYSICS, CONDENSED MATTER rank: 16 / 67 = 0.239 (2015) - Q1 - T1

Factor impacto SCIMAGO: 2.377 - Electronic, Optical and Magnetic Materials (Q1) - Condensed Matter Physics (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA/IMANA-E34
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2011-23791
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2014-53921-R

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)