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  Signatures of a magnetic field-induced unconventional nematic liquid in the frustrated and anisotropic spin-chain cuprate LiCuSbO4

Grafe, H.-J., Nishimoto, S., Iakovleva, M., Vavilova, E., Spillecke, L., Alfonsov, A., et al. (2017). Signatures of a magnetic field-induced unconventional nematic liquid in the frustrated and anisotropic spin-chain cuprate LiCuSbO4. Scientific Reports, 7: 6720, pp. 1-16. doi:10.1038/s41598-017-06525-0.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-CA73-A Version Permalink: http://hdl.handle.net/21.11116/0000-0001-9CA5-5
Genre: Journal Article

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Grafe, H.-J.1, Author
Nishimoto, S.1, Author
Iakovleva, M.1, Author
Vavilova, E.1, Author
Spillecke, L.1, Author
Alfonsov, A.1, Author
Sturza, M.-I.1, Author
Wurmehl, S.1, Author
Nojiri, H.1, Author
Rosner, H.2, Author              
Richter, J.1, Author
Roessler, U. K.1, Author
Drechsler, S.-L.1, Author
Kataev, V.1, Author
Buechner, B.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              

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 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 similar to 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 Li-7 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.

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Language(s): eng - English
 Dates: 2017-07-272017-07-27
 Publication Status: Published in print
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Title: Scientific Reports
  Abbreviation : Sci. Rep.
Source Genre: Journal
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Publ. Info: London, UK : Nature Publishing Group
Pages: - Volume / Issue: 7 Sequence Number: 6720 Start / End Page: 1 - 16 Identifier: ISSN: 2045-2322
CoNE: /journals/resource/2045-2322