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5 papers · 2 filters
Inward dispersion of the spin excitation spectrum of stripe-ordered La2NiO4+d
P. G. Freeman, S. M. Hayden, C. D. Frost +5
Polarized- and unpolarized-neutron scattering measurements of the spin excitation spectrum in the stripe-ordered phase of La2NiO4+d (d = 0.11) are presented. At low energies, the m…
Magnetic order and dynamics of the charge-ordered antiferromagnet La1.5Sr0.5CoO4
L. M. Helme, A. T. Boothroyd, R. Coldea +7
We describe neutron scattering experiments performed to investigate the magnetic order and dynamics of half-doped La1.5Sr0.5CoO4. This layered perovskite exhibits a near-ideal chec…
Inelastic neutron scattering studies of the quantum frustrated magnet clinoatacamite, -Cu2(OD)3Cl, a proposed valence bond solid (VBS)
A. S. Wills, T. G. Perring, S. Raymond +3
The frustrated magnet clinoatacamite, -Cu(OH)Cl, is attracting a lot of interest after suggestions that at low temperature it forms an exotic quantum state termed a Vale…
Spin dynamics in Heisenberg triangular antiferromagnets: A muSR study of LiCrO2
A. Olariu, P. Mendels, F. Bert +4
We report a muSR study of LiCrO2, which has a magnetic lattice made up of a stacking of triangular Heisenberg antiferromagnetic (Cr3+, S = 3/2) layers. A static magnetically ordere…
Spin dynamics of frustrated easy-axis triangular antiferromagnet 2H-AgNiO2 explored by inelastic neutron scattering
E. M. Wheeler, R. Coldea, E. Wawrzynska +6
We report inelastic neutron scattering measurements of the spin dynamics in the layered hexagonal magnet 2H-AgNiO2 which has stacked triangular layers of antiferromagnetically-coup…