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 https://doi.org/10.1103/PhysRevB.75.075423

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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:	https://doi.org/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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