Complex trend of magnetic order in Fe clusters on 4d transition-metal surfaces. I. Experimental evidence and Monte Carlo simulations
Sessi, V.; Otte, F.; Krotzky, S.; Tieg, C.; Wasniowska, M.; Ferriani, P.; Heinze, S.; Honolka, J.; Kern, K.
2014

Abstract

We demonstrate the occurrence of compensated spin configurations in Fe clusters and monolayers on Ru(0001) and Rh(111) by a combination of x-ray magnetic circular dichroism experiments, first-principles calculations, and Monte Carlo simulations. Our results reveal complex intracluster exchange interactions which depend strongly on the substrate 4d-band filling, the cluster geometry, as well as lateral and vertical structural relaxations. The importance of substrate 4d-band filling manifests itself also in small nearest-neighbor exchange interactions in Fe dimers and in a nearly inverted trend of the Ruderman-Kittel-Kasuya-Yosida coupling constants for Fe adatoms on the Ru and Rh surface.

Details

Title Complex trend of magnetic order in Fe clusters on 4d transition-metal surfaces. I. Experimental evidence and Monte Carlo simulations
Author(s) Sessi, V. ; Otte, F. ; Krotzky, S. ; Tieg, C. ; Wasniowska, M. ; Ferriani, P. ; Heinze, S. ; Honolka, J. ; Kern, K.
Published in Physical Review B
Pagination 6
Volume 89
Issue 20
Pages 205425
Date 2014
Publisher College Pk, Amer Physical Soc
ISSN 1098-0121
DOI https://doi.org/10.1103/PhysRevB.89.205425
Other identifier(s) View record in Web of Science
Laboratories LSEN
Record Appears in Scientific production and competences > SB - School of Basic Sciences > IPHYS - Institute of Physics > LSEN - Laboratory of Nanoscale Science
Peer-reviewed publications
Work produced at EPFL
Journal Articles
Published
Record creation date 2014-06-23

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