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  Comment on 'Oxygen vacancy-induced magnetic moment in edge-sharing CuO2 chains of Li2CuO2'

Kuzian, R. O., Klingeler, R., Lorenz, W. E. A., Wizent, N., Nishimoto, S., Nitzsche, U., et al. (2018). Comment on 'Oxygen vacancy-induced magnetic moment in edge-sharing CuO2 chains of Li2CuO2'. New Journal of Physics, 20: 058001, pp. 1-6. doi:10.1088/1367-2630/aac159.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-6EC8-3 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-D388-5
Genre: Journal Article

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 Creators:
Kuzian, R. O.1, Author
Klingeler, R.1, Author
Lorenz, W. E. A.1, Author
Wizent, N.1, Author
Nishimoto, S.1, Author
Nitzsche, U.1, Author
Rosner, H.2, Author              
Milosavljevic, D.2, Author              
Hozoi, L.1, Author
Yadav, R.1, Author
Richter, J.1, Author
Hauser, A.1, Author
Geck, J.1, Author
Hayn, R.1, Author
Yushankhai, V.1, Author
Siurakshina, L.1, Author
Monney, C.1, Author
Schmitt, T.1, Author
Thar, J.1, Author
Roth, G.1, Author
Ito, T.1, AuthorYamaguchi, H.1, AuthorMatsuda, M.1, AuthorJohnston, S.1, AuthorMálek, J.1, AuthorDrechsler, S-L1, Author more..
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: In a recent work devoted to the magnetism of Li2CuO2, Shu et al (2017 New J. Phys. 19, 023026) have proposed a 'simplified' unfrustrated microscopic model that differs considerably from the models refined through decades of prior work. We show that the proposed model is at odds with known experimental data, including the reported magnetic susceptibility chi(T) data up to 550 K. Using an 8th order high-temperature expansion for chi(T), we show that the experimental data for Li2CuO2 are consistent with the prior model derived from inelastic neutron scattering studies. We also establish the T-range of validity for a Curie-Weiss law for the real frustrated magnetic system. We argue that the knowledge of the long-range ordered magnetic structure for T < T-N and of chi(T) in a restricted T-range provides insufficient information to extract all of the relevant couplings in frustrated magnets; the saturation field and INS data must also be used to determine several exchange couplings, including the weak but decisive frustrating antiferromagnetic interchain couplings.

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Language(s): eng - English
 Dates: 2018-05-182018-05-18
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: ISI: 000432830600001
DOI: 10.1088/1367-2630/aac159
 Degree: -

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Title: New Journal of Physics
  Abbreviation : New J. Phys.
Source Genre: Journal
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Publ. Info: Bristol : IOP Publishing
Pages: - Volume / Issue: 20 Sequence Number: 058001 Start / End Page: 1 - 6 Identifier: ISSN: 1367-2630
CoNE: /journals/resource/954926913666