MnO Spin-Wave Dispersion Curves from Powder Diffraction Data

Abstract

We describe a model-independent approach for the extraction of spin-wave dispersion curves from neutron total scattering data. The method utilises 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 powder diffraction data. Our analysis of these configurations gives spin-wave dispersion curves that agree well with those determined independently using neutron triple-axis spectroscopic techniques.

4 pages, 1 figure

References in corpus (2)

• Lattice dynamics and correlated atomic motion from the atomic pair distribution function
• Limits on phonon information extracted from neutron pair-density functions

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