Spin-wave dynamics for the high-magnetic-field phases of the frustrated CuFeO2antiferromagnet: Predictions for inelastic neutron scattering

J. T. Haraldsen, R. S. Fishman, G. Brown
2012 Physical Review B  
We evaluate the spin-wave spectra for the high-field phases of the frustrated triangular lattice antiferromagnet with a focus on the observed high-magnetic field phases of CuFeO2. After determining the appropriate magnetic ground state using a combination of Monte-Carlo simulations and variational methods for a two-dimensional triangular lattice, we evaluate the spin excitation frequencies and intensities using a rotational Holstein-Primakoff expansion for both the collinear and non-collinear
more » ... and non-collinear states. These predictions should help experimentalists to identify the magnetic ground states of CuFeO2 and other triangular-lattice antiferromagnets using inelastic neutron scattering.
doi:10.1103/physrevb.86.024412 fatcat:6fbjua4akfgzdo63ulyurmiclm