MnO spin-wave dispersion curves from neutron powder diffraction
Journal Article
·
· Physical Review. B, Condensed Matter and Materials Physics
- Department of Earth Sciences, Cambridge University, Downing Street, Cambridge CB2 3EQ (United Kingdom)
- ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX (United Kingdom)
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.
- OSTI ID:
- 20976705
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Vol. 75, Issue 7; Other Information: DOI: 10.1103/PhysRevB.75.075423; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
- Country of Publication:
- United States
- Language:
- English
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