Standing Spin Waves in an Antiferromagnetic Molecular Cr6 Horseshoe
S. T. Ochsenbein, O. Waldmann, A. Sieber, G. Carver, R. Bircher, H. U., G\"udel, R. S. G. Davies, G. A. Timco, R. E. P. Winpenny, H. Mutka, F., Fernandez-Alonso
TL;DR
This study investigates standing spin waves in a finite antiferromagnetic Cr6 chain using neutron scattering, revealing classical spin behavior and evaluating spin-wave theories for finite systems.
Contribution
It provides experimental evidence of standing spin waves in a finite antiferromagnetic chain and assesses the applicability of spin-wave theories to such systems.
Findings
Observed magnetic excitations at 2.6 and 4.3 meV
Revealed classical spin structure in finite chain
Evaluated spin-wave theories for finite systems
Abstract
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.
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