| Issue |
EPL
Volume 87, Number 6, September 2009
|
|
|---|---|---|
| Article Number | 67007 | |
| Number of page(s) | 6 | |
| Section | Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties | |
| DOI | https://doi.org/10.1209/0295-5075/87/67007 | |
| Published online | 12 October 2009 | |
On the importance of the magnetic dipole term Tz in analyzing X-ray magnetic circular dichroism spectra of clusters
1
Institute of Physics of the ASCR v. v. i. - Cukrovarnická 10, CZ-162 53 Prague, Czech Republic, EU
2
Universität München, Department Chemie und Biochemie - Butenandtstr. 5-13, D-81377 München, Germany, EU
Corresponding author: sipr@fzu.cz
Received:
19
June
2009
Accepted:
15
September
2009
Employing ab initio relativistic impurity Green function
calculations to Fe and Co clusters on Ni and Au surfaces, we assess the usability of the X-ray magnetic circular dichroism (XMCD) spin sum rule for studying magnetism of supported transition metal clusters. We demonstrate that neglect of the magnetic dipole term Tz might lead to a completely false estimate of how the spin magnetic moment 
depends on the cluster size. In particular, this would be the case of CoN clusters on Au(111) and on Pt(111).
PACS: 78.70.Dm – X-ray absorption spectra / 75.10.Lp – Band and itinerant models / 75.75.+a – Magnetic properties of nanostructures
© EPLA, 2009
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