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Possible quadrupolar nematic phase in the frustrated spin chain LiCuSbO4: An NMR investigation

Author(s): Bosiočić, Marko; Bert, Fabrice; Dutton, Dutton, S.; Cava, Robert Joseph; Baker, Peter J.; et al

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Abstract: © 2017 American Physical Society. The frustrated one-dimensional quantum magnet LiCuSbO4 is a rare realization of the J1-J2 spin chain model with an easily accessible saturation field, formerly estimated at 12 T. Exotic multipolar nematic phases were theoretically predicted in such compounds just below the saturation field, but without unambiguous experimental observation so far. In this paper we present extensive experimental research on the compound in a wide temperature (30 mK to 300 K) and field (0-13.3 T) range by muon spin rotation (μSR), Li7 nuclear magnetic resonance (NMR), and magnetic susceptibility (SQUID). μSR experiments in zero magnetic field demonstrate the absence of long-range 3D ordering down to 30 mK. Together with former heat capacity data [Dutton, Phys. Rev. Lett. 108, 187206 (2012)PRLTAO0031-900710.1103/PhysRevLett.108.187206], magnetic susceptibility measurements suggest a short-range-correlated vector chiral phase in the field range 0-4 T. At the intermediate-field values (5-12 T), the system enters a 3D-ordered spin density wave phase with 0.75μB per copper site at lowest temperatures (125 mK), estimated by NMR. At still higher field, the magnetization is found to be saturated above 13 T where the spin lattice T1-1 relaxation reveals a spin gap estimated at 3.2(2) K. We narrow down the possibility of observing a multipolar nematic phase to the range 12.5-13 T.
Publication Date: 1-Dec-2017
Electronic Publication Date: 20-Dec-2017
Citation: Bosiočić, M., Bert, F., Dutton, S.E., Cava, R.J., Baker, P.J., PoŽek, M., Mendels, P. (2017). Possible quadrupolar nematic phase in the frustrated spin chain LiCuSbO4: An NMR investigation. Phy.sical Review B, 96 (22), 10.1103/PhysRevB.96.224424
DOI: doi:10.1103/PhysRevB.96.224424
ISSN: 2469-9950
EISSN: 2469-9969
Pages: 96.22:224424-1 - 224424-11
Type of Material: Journal Article
Journal/Proceeding Title: Physical Review B
Version: Final published version. Article is made available in OAR by the publisher's permission or policy.
Notes: Physical Review B. Volume 96, Issue 22, 20 December 2017, Article number 224424.

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