MnO spin-wave dispersion curves from neutron powder diffraction.

Goodwin, A. L. and Dove, M. T. and Tucker, M. G. and Keen, D. A. (2007) MnO spin-wave dispersion curves from neutron powder diffraction. Physical Review B, 75. 075423. DOI 10.1103/PhysRevB.75.075423

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Official URL: http://dx.doi.org/10.1103/PhysRevB.75.075423

Abstract

We describe a model-independent approach for the extraction of spin-wave dispersion curves from powder neutron total scattering data. Our approach is based on a statistical analysis of real-space spin configurations to calculate spin-dynamical quantities. The RMCPROFILE implementation of the reverse Monte Carlo refinement process is used to generate a large ensemble of supercell spin configurations from MnO powder diffraction data collected at 100 K. Our analysis of these configurations gives spin-wave dispersion curves for MnO that agree well with those determined independently using neutron triple-axis spectroscopic techniques.

Item Type: Article
Uncontrolled Keywords: 2007 AREP 2007 P IA53
Divisions: 03 - Mineral Sciences
Journal or Publication Title: Physical Review B
Volume: 75
Page Range: 075423
Identification Number: 10.1103/PhysRevB.75.075423
Depositing User: Sarah Humbert
Date Deposited: 16 Feb 2009 13:02
Last Modified: 23 Jul 2013 10:07
URI: http://eprints.esc.cam.ac.uk/id/eprint/324

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