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Observation of long-range magnetic ordering in the proposed spin-singlet state of Hg2Ru2O7 |
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| Authors: | J van Duijn R Ruiz-BustosAD Hillier A Daoud-AladineP Deen |
| Institution: | a Instituto de Energías Renovables, Universidad de Castilla-La Mancha, Paseo de la Investigación 1, Albacete 02006, Spain b Instituto de Energías Renovables, Parque Científico y Tecnológico de Albacete, Paseo de la Investigación 1, Albacete 02006, Spain c ISIS Pulsed Neutron and Muon Source, STFC Rutherford Appleton Laboratory, Harwell Science and Innovation Campus, Didcot OX11 0QX, UK d Institut Laue-Langevin, Rue Jules Horowitz 6, 38042, Grenoble, Cedex 9, France |
| Abstract: | The magnetic ground-state of the pyrochlore material Hg2Ru2O7, which undergoes a metal to Mott insulator transition (MIT) at T=107 K, was investigated using muon spin relaxation and neutron powder diffraction (both non-polarized and polarized) measurements. Unlike the expected behavior associated with a spin-singlet ground-state, these surprisingly revealed the onset of long-range magnetic ordering below the MIT. |
| Keywords: | Spin-singlet Long-range order Neutron diffraction Muon spin relaxation |
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