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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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 Urheber:
Kuzian, R. O.1, Autor
Klingeler, R.1, Autor
Lorenz, W. E. A.1, Autor
Wizent, N.1, Autor
Nishimoto, S.1, Autor
Nitzsche, U.1, Autor
Rosner, H.2, Autor           
Milosavljevic, D.2, Autor           
Hozoi, L.1, Autor
Yadav, R.1, Autor
Richter, J.1, Autor
Hauser, A.1, Autor
Geck, J.1, Autor
Hayn, R.1, Autor
Yushankhai, V.1, Autor
Siurakshina, L.1, Autor
Monney, C.1, Autor
Schmitt, T.1, Autor
Thar, J.1, Autor
Roth, G.1, Autor
Ito, T.1, AutorYamaguchi, H.1, AutorMatsuda, M.1, AutorJohnston, S.1, AutorMálek, J.1, AutorDrechsler, S-L1, Autor mehr..
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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 Zusammenfassung: 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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Sprache(n): eng - English
 Datum: 2018-05-182018-05-18
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: ISI: 000432830600001
DOI: 10.1088/1367-2630/aac159
 Art des Abschluß: -

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Titel: New Journal of Physics
  Kurztitel : New J. Phys.
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Bristol : IOP Publishing
Seiten: - Band / Heft: 20 Artikelnummer: 058001 Start- / Endseite: 1 - 6 Identifikator: ISSN: 1367-2630
CoNE: https://pure.mpg.de/cone/journals/resource/954926913666