Comment on ‘Oxygen vacancy-induced magnetic moment in edge-sharing CuO2 chains of Li2CuO2’
In a recent work devoted to the magnetism of Li _2 CuO _2 , 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 exp...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2018-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/aac159 |
| _version_ | 1797750669759741952 |
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| author | R O Kuzian R Klingeler W E A Lorenz N Wizent S Nishimoto U Nitzsche H Rosner D Milosavljevic L Hozoi R Yadav J Richter A Hauser J Geck R Hayn V Yushankhai L Siurakshina C Monney T Schmitt J Thar G Roth T Ito H Yamaguchi M Matsuda S Johnston J Málek S-L Drechsler |
| author_facet | R O Kuzian R Klingeler W E A Lorenz N Wizent S Nishimoto U Nitzsche H Rosner D Milosavljevic L Hozoi R Yadav J Richter A Hauser J Geck R Hayn V Yushankhai L Siurakshina C Monney T Schmitt J Thar G Roth T Ito H Yamaguchi M Matsuda S Johnston J Málek S-L Drechsler |
| author_sort | R O Kuzian |
| collection | DOAJ |
| description | In a recent work devoted to the magnetism of Li _2 CuO _2 , 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 χ ( T ) data up to 550 K. Using an 8th order high-temperature expansion for χ ( T ), we show that the experimental data for Li _2 CuO _2 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 χ ( 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. |
| first_indexed | 2024-03-12T16:37:12Z |
| format | Article |
| id | doaj.art-2493815df64f4f93b17d6fcb3f443e28 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:37:12Z |
| publishDate | 2018-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-2493815df64f4f93b17d6fcb3f443e282023-08-08T14:49:02ZengIOP PublishingNew Journal of Physics1367-26302018-01-0120505800110.1088/1367-2630/aac159Comment on ‘Oxygen vacancy-induced magnetic moment in edge-sharing CuO2 chains of Li2CuO2’R O Kuzian0https://orcid.org/0000-0002-6672-7224R Klingeler1https://orcid.org/0000-0002-8816-9614W E A Lorenz2N Wizent3S Nishimoto4U Nitzsche5H Rosner6D Milosavljevic7L Hozoi8R Yadav9J Richter10A Hauser11J Geck12R Hayn13V Yushankhai14L Siurakshina15C Monney16https://orcid.org/0000-0003-3496-1435T Schmitt17J Thar18G Roth19T Ito20H Yamaguchi21M Matsuda22S Johnston23J Málek24S-L Drechsler25Inst. f. Problems of Mat. Science NASU, Krzhizhanovskogo 3, 03180 Kiev, Ukraine; Inst. f. Solid State Res. & Mat. Science, IFW-Dresden, D-01169 Dresden, GermanyKirchhoff Institute f. Physics, Heidelberg University , D-69120 Heidelberg, GermanyInst. f. Solid State Res. & Mat. Science, IFW-Dresden, D-01169 Dresden, GermanyInst. f. Solid State Res. & Mat. Science, IFW-Dresden, D-01169 Dresden, Germany; Kirchhoff Institute f. Physics, Heidelberg University , D-69120 Heidelberg, GermanyInst. f. Solid State Res. & Mat. Science, IFW-Dresden, D-01169 Dresden, Germany; Department of Physics, TU Dresden, Dresden, GermanyInst. f. Solid State Res. & Mat. Science, IFW-Dresden, D-01169 Dresden, GermanyMax-Planck-Institute for Chemical Physics of Solids, Dresden, GermanyMax-Planck-Institute for Chemical Physics of Solids, Dresden, GermanyInst. f. Solid State Res. & Mat. Science, IFW-Dresden, D-01169 Dresden, GermanyInst. f. Solid State Res. & Mat. Science, IFW-Dresden, D-01169 Dresden, GermanyInstitute for Theoretical Physics, University of Magdeburg , Magdeburg, GermanyInstitute for Theoretical Physics, University of Magdeburg , Magdeburg, GermanyDepartment of Physics, TU Dresden, Dresden, GermanyAix-Marseille Université , IM2NP-CNRS UMR 7334, F-13397 Marseille, FranceJoint Institut for Nuclear Physics, Dubna, Moscow region, RussiaJoint Institut for Nuclear Physics, Dubna, Moscow region, RussiaDepartment of Physics, University of Zurich , 8057 Zurich, SwitzerlandPaul Scherrer Institute PSI CH-5232 Villingen, SwitzerlandRWTH Aachen University , Institute for Crystalography, Aachen, GermanyRWTH Aachen University , Institute for Crystalography, Aachen, GermanyNat. Inst. Adv. Indust. Sci. & Techn. (AIST), Tsukuba, Ibaraki 305-8562, JapanNat. Inst. Adv. Indust. Sci. & Techn. (AIST), Tsukuba, Ibaraki 305-8562, JapanNeutron Scattering Div., Oak Ridge National Laboratory, Oak Ridge, TN 37831, United States of AmericaDept. of Phys. & Astron., The University of Tennesee , Knoxville, TN 37996, United States of AmericaInst. of Physics, ASCR, Na Slovance 2, CZ-18221 Prague, CzechiaInst. f. Solid State Res. & Mat. Science, IFW-Dresden, D-01169 Dresden, GermanyIn a recent work devoted to the magnetism of Li _2 CuO _2 , 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 χ ( T ) data up to 550 K. Using an 8th order high-temperature expansion for χ ( T ), we show that the experimental data for Li _2 CuO _2 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 χ ( 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.https://doi.org/10.1088/1367-2630/aac159edge-sharing cupratesfrustrated magnetismmagnetic susceptibilityexchange couplingshigh-temperature expansion |
| spellingShingle | R O Kuzian R Klingeler W E A Lorenz N Wizent S Nishimoto U Nitzsche H Rosner D Milosavljevic L Hozoi R Yadav J Richter A Hauser J Geck R Hayn V Yushankhai L Siurakshina C Monney T Schmitt J Thar G Roth T Ito H Yamaguchi M Matsuda S Johnston J Málek S-L Drechsler Comment on ‘Oxygen vacancy-induced magnetic moment in edge-sharing CuO2 chains of Li2CuO2’ New Journal of Physics edge-sharing cuprates frustrated magnetism magnetic susceptibility exchange couplings high-temperature expansion |
| title | Comment on ‘Oxygen vacancy-induced magnetic moment in edge-sharing CuO2 chains of Li2CuO2’ |
| title_full | Comment on ‘Oxygen vacancy-induced magnetic moment in edge-sharing CuO2 chains of Li2CuO2’ |
| title_fullStr | Comment on ‘Oxygen vacancy-induced magnetic moment in edge-sharing CuO2 chains of Li2CuO2’ |
| title_full_unstemmed | Comment on ‘Oxygen vacancy-induced magnetic moment in edge-sharing CuO2 chains of Li2CuO2’ |
| title_short | Comment on ‘Oxygen vacancy-induced magnetic moment in edge-sharing CuO2 chains of Li2CuO2’ |
| title_sort | comment on oxygen vacancy induced magnetic moment in edge sharing cuo2 chains of li2cuo2 |
| topic | edge-sharing cuprates frustrated magnetism magnetic susceptibility exchange couplings high-temperature expansion |
| url | https://doi.org/10.1088/1367-2630/aac159 |
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