MnO spin-wave dispersion curves from neutron powder diffraction

Journal article

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. © 2007 The American Physical Society.

Authors: Goodwin, A; Dove, M; Tucker, MG; Keen, D

• Publication status: Published
• Journal: Physical Review B
• Volume: 75
• Issue: 7
• Publication date: 2007-02-01
• DOI: 10.1103/PhysRevB.75.075423
• EISSN: 1550-235X
• ISSN: 1098-0121
• Language: English