Artículo
Arrachea, L.; Zanchi, D. "U-J synergy effect for high-T c superconductors" (2005) Physical Review B - Condensed Matter and Materials Physics. 71(6)
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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.
Registro:
| Documento: | Artículo |
| Título: | U-J synergy effect for high-T c superconductors |
| Autor: | Arrachea, L.; Zanchi, D. |
| Filiación: | Departamento de Física, Universidad de Buenos Aires, Ciudad Universitaria Pabellon I, (1428) Buenos Aires, Argentina Lab. de Phys. Theor./Hautes Energies, 4 Place Jussieu, 75252 Paris Cedex 05, France Inst. Biocomp./Fis. Sist. Complejos, Zaragoza, Spain |
| Palabras clave: | article; calculation; energy; magnetism; mathematical analysis; mathematical model; superconductor |
| Año: | 2005 |
| Volumen: | 71 |
| Número: | 6 |
| DOI: | http://dx.doi.org/10.1103/PhysRevB.71.064519 |
| Título revista: | Physical Review B - Condensed Matter and Materials Physics |
| Título revista abreviado: | Phys. Rev. B Condens. Matter Mater. Phys. |
| ISSN: | 10980121 |
| CODEN: | PRBMD |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10980121_v71_n6_p_Arrachea |
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Citas:
---------- APA ----------
Arrachea, L. & Zanchi, D. (2005) . U-J synergy effect for high-T c superconductors. Physical Review B - Condensed Matter and Materials Physics, 71(6).http://dx.doi.org/10.1103/PhysRevB.71.064519
---------- CHICAGO ----------
Arrachea, L., Zanchi, D. "U-J synergy effect for high-T c superconductors" . Physical Review B - Condensed Matter and Materials Physics 71, no. 6 (2005).http://dx.doi.org/10.1103/PhysRevB.71.064519
---------- MLA ----------
Arrachea, L., Zanchi, D. "U-J synergy effect for high-T c superconductors" . Physical Review B - Condensed Matter and Materials Physics, vol. 71, no. 6, 2005.http://dx.doi.org/10.1103/PhysRevB.71.064519
---------- VANCOUVER ----------
Arrachea, L., Zanchi, D. U-J synergy effect for high-T c superconductors. Phys. Rev. B Condens. Matter Mater. Phys. 2005;71(6).http://dx.doi.org/10.1103/PhysRevB.71.064519
