Magnetic excitations of a new potential spin liquid
We have synthesized CuSb2O6 in a new structure, the rosiaite (PbSb2O6) structure, space group P-31m. In this structure magnetic cations are arranged in trigonal layers, and the oxygen octahedron around the copper is more symmetric than in the common [slightly distorted] trirutile structure. The absence of long-range order and of ZFC-FC splitting in the susceptibility, the isotropy of the Cu2+, and the presence of sizable antiferromagnetic interactions (deviations from Curie-Weiss below ~150K) could imply a quantum (S=1/2) spin liquid scenario, expected for triangular antiferromagnets with nn/nnn interactions. We propose to investigate the magnetic excitations of CuSb2O6 on IN5 at 5 temperatures, and ask for 3d of beamtime. We need IN5 for its superior resolution and flexibility.
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SAFIULINA Irina; ENDERLE Mechthild; OLLIVIER Jacques and Henrik M. Ronnow. (2018). Magnetic excitations of a new potential spin liquid. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.4-05-705
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