Publication: Neutron scattering experiments and simulations near the magnetic percolation threshold of Fe_(x)Zn_(1-x)F_(2)
Loading...
Official URL
Full text at PDC
Publication Date
2012-07-12
Authors
Advisors (or tutors)
Editors
Journal Title
Journal ISSN
Volume Title
Publisher
American Physical Society
Citations
Exportar
Abstract
The low temperature excitations in the anisotropic antiferromagnetic Fe_(x)Zn_(1-x)F_(2) for x = 0.25 and 0.31, at and just above the magnetic percolation threshold concentration x_(p) = 0.25, were measured using inelastic neutron scattering. The excitations were simulated for x = 0.31 using a localized, classical excitation model, which accounts well for the energies and relative intensities of the excitations observed in the scattering experiments.
Description
© 2012 American Physical Society. We acknowledge partial financial support from MICINN, Spain, (Grant Nos. FIS2009-12648-C03 and FIS2011-22566), and from UCM-Banco Santander (GR32/10-A/910383, GR58/08-910556). V.M.-M. thanks the del Amo foundation and the hospitality of the Physics Department of U. California Santa Cruz, where part of this work was performed. We thank the members of the Neutron Scattering Laboratory, Institute for Solid State Physics, the University of Tokyo for supporting our experiments.