Neutron scattering and muSR investigations of the spin liquid state with quenched disorder in LuCuGaO4

Details Neutron scattering and muSR investigations of the spin liquid state with quenched disorder in LuCuGaO4 Neutron scattering and muSR investigations of the spin liquid state with quenched disorder in LuCuGaO4

2010-02-04

arxiv.org/abs/1002.0975v1

Physics

Condensed Matter

Materials Science

18 pages, 7 figures

Scientific paper

LuCuGaO4 has magnetic Cu2+ and diamagnetic Ga3+ ions distributed on a triangular bilayer. Susceptibility, muSR and neutron scattering measurements show that at low temperature the spins form a short range correlated state with a gapless continuum of excitations. The development of this spin liquid state is strongly reminiscent of that in other two dimensional frustrated magnets and we suggest that it is a generic property of such systems, even surviving in the presence of strong quenched disorder.

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