Artículo
Büsser, C.; Anda, E.V.; Urba, L.; Ferrari, V.; Chiappe, G. "Metal-insulator transition in highly correlated systems" (1998) Journal of Magnetism and Magnetic Materials. 177-181(PART 1):311-312
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Abstract:
We propose a new formalism to solve the Hubbard Hamiltonian. The Green functions of the many-body systems is obtained from a cumulant diagrammatic expansion. The undress propagator is taken to be the exact result for a small-size cluster obtained using the Lanczos method. The inter-cluster interaction is considered to be the perturbation Hamiltonian. In 1D we reproduce some of the known results. At half filling in 2D we obtain that the system suffers a metal-insulator transition as a function of U. For a finite coordinated Bethe lattice the density of states has a three-peak shape with an Abrikosov-Suhl resonance at the Fermi level. © 1998 Elsevier Science B.V. All rights reserved.
Registro:
| Documento: | Artículo |
| Título: | Metal-insulator transition in highly correlated systems |
| Autor: | Büsser, C.; Anda, E.V.; Urba, L.; Ferrari, V.; Chiappe, G. |
| Filiación: | Departamento de Física, Pont. Univ. Catol. do Rio de Janeiro, C.P. 38071, 22452-970, Rio de Janeiro, R.J., Brazil Departamento de Física, Universidad de Buenos Aires, Ciudad Universitaria, 1428, Buenos Aires, Argentina |
| Palabras clave: | Cumulant expansion; Highly correlated electrons; Phase transitions - metal-nonmetal; Crystal lattices; Electrons; Fermi level; Green's function; Mathematical models; Metal insulator boundaries; Numerical methods; Perturbation techniques; Phase transitions; Abrikosov-Syhl resonance; Bethe lattice; Hubbard Hamiltonian; Lanczos method; Metal insulator transition; One dimensional; Two dimensional; Magnetization |
| Año: | 1998 |
| Volumen: | 177-181 |
| Número: | PART 1 |
| Página de inicio: | 311 |
| Página de fin: | 312 |
| DOI: | http://dx.doi.org/10.1016/S0304-8853(97)00995-5 |
| Título revista: | Journal of Magnetism and Magnetic Materials |
| Título revista abreviado: | J Magn Magn Mater |
| ISSN: | 03048853 |
| CODEN: | JMMMD |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03048853_v177-181_nPART1_p311_Busser |
Referencias:
- Metzner, W., (1991) Phys. Rev. B, 43, p. 8549
- Anda, E., (1981) J. Phys. C, 14, pp. L1037
- Dagotto, E., (1994) Rev. Mod. Phys., 66, p. 763
- Lieb, E., Wu, F., (1968) Phys. Rev. Lett., 25, p. 1445
- Zhang, X.Y., Rozenberg, M.J., Kotliar, G., (1993) Phys. Rev. Lett., 70, p. 1666
Citas:
---------- APA ----------
Büsser, C., Anda, E.V., Urba, L., Ferrari, V. & Chiappe, G. (1998) . Metal-insulator transition in highly correlated systems. Journal of Magnetism and Magnetic Materials, 177-181(PART 1), 311-312.http://dx.doi.org/10.1016/S0304-8853(97)00995-5
---------- CHICAGO ----------
Büsser, C., Anda, E.V., Urba, L., Ferrari, V., Chiappe, G. "Metal-insulator transition in highly correlated systems" . Journal of Magnetism and Magnetic Materials 177-181, no. PART 1 (1998) : 311-312.http://dx.doi.org/10.1016/S0304-8853(97)00995-5
---------- MLA ----------
Büsser, C., Anda, E.V., Urba, L., Ferrari, V., Chiappe, G. "Metal-insulator transition in highly correlated systems" . Journal of Magnetism and Magnetic Materials, vol. 177-181, no. PART 1, 1998, pp. 311-312.http://dx.doi.org/10.1016/S0304-8853(97)00995-5
---------- VANCOUVER ----------
Büsser, C., Anda, E.V., Urba, L., Ferrari, V., Chiappe, G. Metal-insulator transition in highly correlated systems. J Magn Magn Mater. 1998;177-181(PART 1):311-312.http://dx.doi.org/10.1016/S0304-8853(97)00995-5
