Extremely well isolated two-dimensional spin-1/2 antiferromagnetic Heisenberg layers with a small exchange coupling in the molecular-based magnet CuPOF
dc.bibliographicCitation.firstPage | 64431 | eng |
dc.bibliographicCitation.issue | 6 | eng |
dc.bibliographicCitation.journalTitle | Physical review : B : covering condensed matter and materials physics | eng |
dc.bibliographicCitation.volume | 102 | eng |
dc.contributor.author | Opherden, D. | |
dc.contributor.author | Nizar, N. | |
dc.contributor.author | Richardson, K. | |
dc.contributor.author | Monroe, J.C. | |
dc.contributor.author | Turnbull, M.M. | |
dc.contributor.author | Polson, M. | |
dc.contributor.author | Vela, S. | |
dc.contributor.author | Blackmore, W.J.A. | |
dc.contributor.author | Goddard, P.A. | |
dc.contributor.author | Singleton, J. | |
dc.contributor.author | Choi, E.S. | |
dc.contributor.author | Xia, F. | |
dc.contributor.author | Williams, R.C. | |
dc.contributor.author | Lancaster, T. | |
dc.contributor.author | Pratt, F.L. | |
dc.contributor.author | Blundell, S.J. | |
dc.contributor.author | Skourski, Y. | |
dc.contributor.author | Uhlarz, M. | |
dc.contributor.author | Ponomaryov, A.N. | |
dc.contributor.author | Zvyagin, S.A. | |
dc.contributor.author | Wosnitza, J. | |
dc.contributor.author | Baenitz, M. | |
dc.contributor.author | Heinmaa, I. | |
dc.contributor.author | Stern, R. | |
dc.contributor.author | Kühne, H. | |
dc.contributor.author | Landee, C.P. | |
dc.date.accessioned | 2021-08-26T12:35:31Z | |
dc.date.available | 2021-08-26T12:35:31Z | |
dc.date.issued | 2020 | |
dc.description.abstract | We report on a comprehensive characterization of the newly synthesized Cu2+-based molecular magnet [Cu(pz)2(2-HOpy)2](PF6)2 (CuPOF), where pz=C4H4N2 and 2-HOpy=C5H4NHO. From a comparison of theoretical modeling to results of bulk magnetometry, specific heat, μ+SR, ESR, and NMR spectroscopy, this material is determined as an excellent realization of the two dimensional square-lattice S=12 antiferromagnetic Heisenberg model with a moderate intraplane nearest-neighbor exchange coupling of J/kB=6.80(5) K, and an extremely small interlayer interaction of about 1 mK. At zero field, the bulk magnetometry reveals a temperature-driven crossover of spin correlations from isotropic to XY type, caused by the presence of a weak intrinsic easy-plane anisotropy. A transition to long-range order, driven by the low-temperature XY anisotropy under the influence of the interlayer coupling, occurs at TN=1.38(2) K, as revealed by μ+SR. In applied magnetic fields, our H1-NMR data reveal a strong increase of the magnetic anisotropy, manifested by a pronounced enhancement of the transition temperature to commensurate long-range order at TN=2.8 K and 7 T. © 2020 authors. | eng |
dc.description.version | publishedVersion | eng |
dc.identifier.uri | https://oa.tib.eu/renate/handle/123456789/6608 | |
dc.identifier.uri | https://doi.org/10.34657/5655 | |
dc.language.iso | eng | eng |
dc.publisher | Woodbury, NY : Inst. | eng |
dc.relation.doi | https://doi.org/10.1103/PhysRevB.102.064431 | |
dc.relation.essn | 2469-9969 | |
dc.relation.issn | 1098-0121 | |
dc.rights.license | CC BY 4.0 Unported | eng |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | eng |
dc.subject.ddc | 530 | eng |
dc.subject.other | Antiferromagnetism | eng |
dc.subject.other | Electron spin resonance spectroscopy | eng |
dc.subject.other | Exchange coupling | eng |
dc.title | Extremely well isolated two-dimensional spin-1/2 antiferromagnetic Heisenberg layers with a small exchange coupling in the molecular-based magnet CuPOF | eng |
dc.type | Article | eng |
dc.type | Text | eng |
tib.accessRights | openAccess | eng |
wgl.contributor | IFWD | eng |
wgl.subject | Physik | eng |
wgl.type | Zeitschriftenartikel | eng |
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