dc.creator | Jiménez Calzado, Carmen | es |
dc.creator | Fernández Sanz, Javier | es |
dc.creator | Malrieu, J.P. | es |
dc.date.accessioned | 2016-10-28T10:33:52Z | |
dc.date.available | 2016-10-28T10:33:52Z | |
dc.date.issued | 2000 | |
dc.identifier.citation | Jiménez Calzado, C., Fernández Sanz, J. y Malrieu, J.P. (2000). Accurate ab initio determination of magnetic interactions and hopping integrals in La2-xSrxCuO4 systems. Journal of Chemical Physics, 112 (11), 5158-5167. | |
dc.identifier.issn | 0021-9606 | es |
dc.identifier.uri | http://hdl.handle.net/11441/48339 | |
dc.description.abstract | The nature of magnetic interactions and electron transfer processes in La22xSrxCuO4 systems are
studied, by means of an ab initio embedded cluster model approach, using a difference dedicated
configuration interaction ~DDCI! procedure. For the undoped system, the crucial role played by the
ligand to metal charge transfer ~LMCT! configurations in the magnetic process makes necessary the
use of an enlarged DDCI space, which explicitly takes account of the relaxation of these LMCT
configurations. This procedure allows us to approach the experimental magnetic coupling constant
value. In hole-doped systems, the value obtained for the electron transfer integral, t, is of 0.54–0.57
eV. The extra hole, characterized from the nature and occupation of differential natural orbitals,
has a strong p character ~approximately 50%! and is essentially localized in CuO2 planes. These
results are in agreement with the experimental evidence about these kinds of compounds. Neither
the value of t nor the nature of the extra hole are seriously affected by the optimization of the
orbitals used in the CI expansion. This suggests that a t – J effective Hamiltonian is an adequate
model to study the electronic properties of these systems | es |
dc.format | application/pdf | es |
dc.language.iso | eng | es |
dc.publisher | American Institute of Physics Publising LLC | es |
dc.relation.ispartof | Journal of Chemical Physics, 112 (11), 5158-5167. | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.title | Accurate ab initio determination of magnetic interactions and hopping integrals in La2-xSrxCuO4 systems | es |
dc.type | info:eu-repo/semantics/article | es |
dcterms.identifier | https://ror.org/03yxnpp24 | |
dc.type.version | info:eu-repo/semantics/publishedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Química Física | es |
dc.relation.publisherversion | https://dx.doi.org/10.1063/1.481093 | es |
dc.identifier.doi | 10.1063/1.481093 | es |
idus.format.extent | 10 p. | es |
dc.journaltitle | Journal of Chemical Physics | es |
dc.publication.volumen | 112 | es |
dc.publication.issue | 11 | es |
dc.publication.initialPage | 5158 | es |
dc.publication.endPage | 5167 | es |
dc.identifier.idus | https://idus.us.es/xmlui/handle/11441/48339 | |