Volume 79, Number 1, July 2007
|Number of page(s)||6|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||06 June 2007|
Standing spin waves in an antiferromagnetic molecular Cr6 horseshoe
Department of Chemistry and Biochemistry, University of Bern - Freiestrasse 3, CH-3000 Bern 9, Switzerland
2 Department of Chemistry, The University of Manchester - Oxford Road, Manchester M13 9PL, UK
3 Institut Laue-Langevin - 6 Rue Jules Horowitz, BP 156-38042, Grenoble Cedex 9, France
4 ISIS Facility, CCLRC Rutherford Appleton Laboratory - Didcot OX11 0QX, UK
Accepted: 18 May 2007
The antiferromagnetic molecular finite chain Cr6 was studied by inelastic neutron scattering. The observed magnetic excitations at 2.6 and 4.3 meV correspond, due to the open boundaries of a finite chain, to standing spin waves. The determined energy spectrum revealed an essentially classical spin structure. Hence, various spin-wave theories were investigated in order to assess their potential for describing the elementary excitations of finite spin systems.
PACS: 75.10.Jm – Quantized spin models / 33.15.Kr – Electric and magnetic moments (and derivatives), polarizability, and magnetic susceptibility / 78.70.Nx – Neutron inelastic scattering
© Europhysics Letters Association, 2007
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