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12 papers · 2 filters
Effect of carrier doping on the formation and collapse of magnetic polarons in lightly hole-doped La_{1-x}Sr_xCoO_3
A. Podlesnyak, G. Ehlers, M. Frontzek +7
We investigate the doping dependence of the nanoscale electronic and magnetic inhomogeneities in the hole-doping range 0.002<x<0.1 of cobalt based perovskites, La{1-x}Sr_xCoO_3. Us…
Itinerant Spin Excitations in SrFe2As2 Measured by Inelastic Neutron Scattering
R. A. Ewings, T. G. Perring, J. Gillett +5
We report inelastic neutron scattering measurements of the magnetic excitations in SrFe2As2, the parent of a family of iron-based superconductors. The data extend throughout the Br…
Anomalous High-Energy Spin Excitations in La2CuO4
N. S. Headings, S. M. Hayden, R. Coldea +1
Inelastic neutron scattering is used to investigate the collective magnetic excitations of the high-temperature superconductor parent antiferromagnet La2CuO4. We find that while th…
Spin and Orbital Order of the Vanadium Spinel MgV2O4
Elisa M. Wheeler, Bella Lake, A. T. M. Nazmul Islam +4
We present a unique study of the frustrated spinel MgV2O4 which possesses highly coupled spin, lattice and orbital degrees of freedom. Using large single-crystal and powder samples…
Magnetic spectrum of the two-dimensional antiferromagnet La2CoO4 studied by inelastic neutron scattering
P. Babkevich, D. Prabhakaran, C. D. Frost +1
We report measurements of the magnetic excitation spectrum of the layered antiferromagnet La2CoO4 by time-of-flight neutron inelastic scattering. In the energy range probed in our…
Ferromagnetic Excitations in LaSrCoO Observed Using Neutron Inelastic Scattering
R. A. Ewings, P. G. Freeman, M. Enderle +3
Polarized neutron inelastic scattering has been used to measure spin excitations in ferromagnetic LaSrCoO. The magnon spectrum of these spin excitations is…