Quantum spin liquid in frustrated one-dimensional LiCuSbO 4

S. E. Dutton, M. Kumar, M. Mourigal, Z. G. Soos, J. J. Wen, C. L. Broholm, N. H. Andersen, Q. Huang, M. Zbiri, R. Toft-Petersen, R. J. Cava

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A quantum magnet, LiCuSbO 4, with chains of edge-sharing spin-12 CuO 6 octahedra is reported. While short-range order is observed for T<10K, no zero-field phase transition or spin freezing occurs down to 100mK. Specific heat indicates a distinct high-field phase near the 12T saturation field. Neutron scattering shows incommensurate spin correlations with q=(0.47±0.01)π/a and places an upper limit of 70μeV on any spin gap. Exact diagonalization of 16-spin easy-plane spin-12 chains with competing ferro- and antiferromagnetic interactions (J 1=-75K, J 2=34K) accounts for the T>2K data.

Original languageEnglish (US)
Article number187206
JournalPhysical review letters
Issue number18
StatePublished - May 3 2012

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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