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Accurate prediction of large antiferromagnetic interactions in High-Tc HgBa2Can-1CunO2n+2+delta (n = 2,3) superconductor parent compounds

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dc.creator Muñoz Ramos, David
dc.creator Illas i Riera, Francesc
dc.creator Moreira, Ibério de Pinho Ribeiro
dc.date 2010-07-05T09:00:49Z
dc.date 2010-07-05T09:00:49Z
dc.date 2000
dc.date.accessioned 2024-12-16T10:24:32Z
dc.date.available 2024-12-16T10:24:32Z
dc.identifier 0031-9007
dc.identifier http://hdl.handle.net/2445/13258
dc.identifier 154110
dc.identifier.uri http://fima-docencia.ub.edu:8080/xmlui/handle/123456789/17855
dc.description The in-plane nearest-neighbor Heisenberg magnetic coupling constant, J , of La 2 CuO 4 , Nd 2 CuO 4 , Sr 2 CuO 2 Cl 2 , YBa 2 Cu 3 O 6 , and undoped HgBa 2 Ca n − 1 Cu n O 2 n + 2 + δ ( n = 1 , 2 , 3 ) is calculated from accurate ab initio configuration interaction calculations. For the first four compounds, the theoretical J values are in quantitative agreement with experiment. For the Hg-based compounds the predicted values are − 135 meV ( n = 1 ) and ∼ − 160 meV ( n = 2 , 3 ), the latter being much larger than in previous cases and, for n = 3 , increasing with pressure. Nevertheless, the physics governing J in all these layered cuprates appears to be the same. Moreover, calculations suggest a possible relationship between J and T c .
dc.format 4 p.
dc.format application/pdf
dc.language eng
dc.publisher American Physical Society
dc.relation Reproducció digital del document proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevLett.84.1579
dc.relation Physical Review Letters, 2000, vol. 84, núm. 7, p. 1579-1582
dc.relation http://dx.doi.org/10.1103/PhysRevLett.84.1579
dc.rights (c) American Physical Society, 2000
dc.rights info:eu-repo/semantics/openAccess
dc.source Articles publicats en revistes (Ciència dels Materials i Química Física)
dc.subject Superconductivitat
dc.subject Materials
dc.subject Propietats magnètiques
dc.subject Interaccions electromagnètiques
dc.subject Superconductivity
dc.subject Magnetic properties and materials
dc.subject Electromagnetic interactions
dc.title Accurate prediction of large antiferromagnetic interactions in High-Tc HgBa2Can-1CunO2n+2+delta (n = 2,3) superconductor parent compounds
dc.type info:eu-repo/semantics/article
dc.type info:eu-repo/semantics/publishedVersion


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