@article{e4fbe719b1ea45f9a7fd08688bed4867,
title = "Signatures of a magnetic field-induced unconventional nematic liquid in the frustrated and anisotropic spin-chain cuprate LiCuSbO4",
abstract = "Modern theories of quantum magnetism predict exotic multipolar states in weakly interacting strongly frustrated spin-1/2 Heisenberg chains with ferromagnetic nearest neighbor (NN) inchain exchange in high magnetic fields. Experimentally these states remained elusive so far. Here we report strong indications of a magnetic field-induced nematic liquid arising above a field of ~13 T in the edge-sharing chain cuprate LiSbCuO4 = LiCuSbO4. This interpretation is based on the observation of a field induced spin-gap in the measurements of the 7Li NMR spin relaxation rate T 1 -1 as well as a contrasting field-dependent power-law behavior of T 1 -1 vs. T and is further supported by static magnetization and ESR data. An underlying theoretical microscopic approach favoring a nematic scenario is based essentially on the NN XYZ exchange anisotropy within a model for frustrated spin-1/2 chains and is investigated by the DMRG technique. The employed exchange parameters are justified qualitatively by electronic structure calculations for LiCuSbO4.",
author = "Grafe, {H. J.} and S. Nishimoto and M. Iakovleva and E. Vavilova and L. Spillecke and A. Alfonsov and Sturza, {M. I.} and S. Wurmehl and H. Nojiri and H. Rosner and J. Richter and R{\"o}{\ss}ler, {U. K.} and Drechsler, {S. L.} and V. Kataev and B. B{\"u}chner",
note = "Funding Information: The authors thank C. Blum and L. Giebeler for assistance with the XRD measurements, and A. Wolter-Giraud, F. Hammerath, Y. Utz and A. Smirnov for useful discussions. This work has been supported in part by the Deutsche Forschungsgemeinschaft through grants SFB 1143 (S.N.), KA 1694/8-1 (V.K.), GR 3330/4-1 (H.-J.G.), through the Emmy Noether Programme in the projects WU595/3-1, and WU595/3-2 (S.W.). The work of E.V. and M.I. has been supported in part by project RFBR 14-02-01194. V.K. gratefully acknowledges his stay at Tohoku University supported by ICC-IMR. H.N. acknowledges Kakenhi 16H01060. S.-L.D. and S.N. thank R.O. Kuzian, J. van den Brink, C. Agrapidis, A. Tsirlin, A. Zvyagin, P. Mendels, H. K?hne, S. Zvyagin, M. Zhitomirsky, and especially O. Starykh for critical and valuable discussions and stimulating interest. The publication of this article was funded by the Open Access Fund of the Leibniz Association. Publisher Copyright: {\textcopyright} 2017 The Author(s).",
year = "2017",
month = dec,
day = "1",
doi = "10.1038/s41598-017-06525-0",
language = "English",
volume = "7",
journal = "Scientific Reports",
issn = "2045-2322",
publisher = "Nature Publishing Group",
number = "1",
}