Magnetic excitations in the quantum spin-liquid candidate S=1 kagome antiferromagnet ND4Ni2.5V2O7(OD)2.D2O
Two-dimensional low-spin kagome magnets are probably the best candidate materials for studies of the novel ground states and exotic, often fractionalized, excitations that characterize quantum spin liquids (QSLs). To date most interest has focussed on S=1/2 QSLs and S=1 systems are poorly understood. We propose to measure the magnetic excitations in the new isotropic S=1 quantum magnet ND4Ni2.5V2O7(OH)2.D2O, which has an ideal (undistorted) kagome lattice and displays spin dynamics and an absence of magnetic order down to 280 mK. The particular aim is to characterise the magnetic excitation spectrum to confirm the ground state character and locate where the system sits in the phase diagram of QSL states.
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CONNOLLY Eamonn; BOLDRIN David; FAK Bjorn; GEORGOPOULOU Madeleine; OLLIVIER Jacques and WILLS Andrew S.. (2021). Magnetic excitations in the quantum spin-liquid candidate S=1 kagome antiferromagnet ND4Ni2.5V2O7(OD)2.D2O. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.4-05-827
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