114 citations · 313 across the 7 of their papers we have counts for
7 papers
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…
Influence of static Jahn-Teller distortion on the magnetic excitation spectrum of PrO2: A synchrotron x-ray and neutron inelastic scattering study
C. H. Webster, L. M. Helme, A. T. Boothroyd +6
A synchrotron x-ray diffraction study of the crystallographic structure of PrO2 in the Jahn-Teller distorted phase is reported. The distortion of the oxygen sublattice, which was p…
Spin gaps and magnetic structure of NaxCoO2
L. M. Helme, A. T. Boothroyd, R. Coldea +4
We present two experiments that provide information on spin anisotropy and the magnetic structure of NaxCoO2. First, we report low-energy neutron inelastic scattering measurements…
Three-Dimensional Spin Fluctuations in Na0.75CoO2
L. M. Helme, A. T. Boothroyd, R. Coldea +4
We report polarized- and unpolarized-neutron scattering measurements of magnetic excitations in single-crystal Na0.75CoO2. The data confirm ferromagnetic correlations within the co…
Magnetic Studies of Polycrystalline and Single-Crystal NaxCoO2
D. Prabhakaran, A. T. Boothroyd, R. Coldea +2
We have investigated the preparation and bulk magnetic properties of NaxCoO2 in the range 0.5<x<0.95, including those for single crystals grown by the floating-zone method in an im…
Ferromagnetic in-plane spin fluctuations in NaxCoO2 observed by neutron inelastic scattering
A. T. Boothroyd, R. Coldea, D. A. Tennant +3
We present neutron scattering spectra taken from a single crystal of Na0.75CoO2, the precursor to a novel cobalt-oxide superconductor. The data contain a prominent inelastic signal…