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dc.contributor.author
Arrachea, Liliana del Carmen
dc.contributor.author
Zanchi, Dra?en
dc.date.available
2018-09-27T17:14:29Z
dc.date.issued
2005-12
dc.identifier.citation
Arrachea, Liliana del Carmen; Zanchi, Dra?en; U-J synergy effect for high-T c superconductors; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 71; 6; 12-2005; 64519-64529
dc.identifier.issn
1098-0121
dc.identifier.uri
http://hdl.handle.net/11336/61081
dc.description.abstract
Using the renormalization group with included self-energy effects and exact diagonalization of small clusters we investigate the ground-state phase diagram of a two-dimensional extended Hubbard model with nearest-neighbor exchange interaction J, in addition to the local Coulomb repulsion U. The main instabilities are antiferromagnetism close to half filling and d x2-y2 superconductivity in the doped system. We find that self-energy effects are fatal for superconductivity in the repulsive Hubbard model (i.e., J=0, u>0). The superconductivity is triggered by finite J. The combined action of J and U interactions provide a remarkably efficient, mechanism to enhance both d x2-y2 superconducting and antiferromagnetic correlations. © 2005 The American Physical Society.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Physical Society
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject.classification
Astronomía
dc.subject.classification
Ciencias Físicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
U-J synergy effect for high-T c superconductors
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-09-27T15:47:41Z
dc.journal.volume
71
dc.journal.number
6
dc.journal.pagination
64519-64529
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Nueva York
dc.description.fil
Fil: Arrachea, Liliana del Carmen. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
dc.description.fil
Fil: Zanchi, Dra?en. Laboratoire de Physique Theorique Et Hautes Energies; Francia
dc.journal.title
Physical Review B: Condensed Matter and Materials Physics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1103/PhysRevB.71.064519
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