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Comparing XMCD and DFT with STM spin excitation spectroscopy for Fe and Co adatoms on Cu2N/Cu(100)

Etzkorn, M; Hirjibehedin, CF; Lehnert, A; Ouazi, S; Rusponi, S; Stepanow, S; Gambardella, P; ... Brune, H; + view all (2015) Comparing XMCD and DFT with STM spin excitation spectroscopy for Fe and Co adatoms on Cu2N/Cu(100). Physical Review B , 92 (18) , Article 184406. 10.1103/PhysRevB.92.184406. Green open access

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Abstract

We report on the magnetic properties of Fe and Co adatoms on a Cu2N/Cu(100)-c(2 × 2) surface investigated by x-ray magnetic dichroism measurements and density functional theory (DFT) calculations including the local coulomb interaction. We compare these results with properties formerly deduced from STM spin excitation spectroscopy (SES) performed on the individual adatoms. In particular we focus on the values of the local magnetic moments determined by XMCD compared to the expectation values derived from the description of the SES data. The angular dependence of the projected magnetic moments along the magnetic field, as measured by XMCD, can be understood on the basis of the SES Hamiltonian. In agreement with DFT, the XMCD measurements show large orbital contributions to the total magnetic moment for both magnetic adatoms.

Type: Article
Title: Comparing XMCD and DFT with STM spin excitation spectroscopy for Fe and Co adatoms on Cu2N/Cu(100)
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevB.92.184406
Publisher version: http://dx.doi.org/10.1103/PhysRevB.92.184406
Language: English
Additional information: ©2015 American Physical Society.
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology
URI: http://discovery.ucl.ac.uk/id/eprint/1471839
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