Orbital-selective Mott-Hubbard transition in the two-band Hubbard model
| dc.creator | Arita, R. | |
| dc.creator | Held, K. | |
| dc.date | 2005-04-02 | |
| dc.date | 2006-01-27 | |
| dc.date.accessioned | 2026-07-07T06:37:38Z | |
| dc.date.available | 2026-07-07T06:37:38Z | |
| dc.description | Recent advances in the field of quantum Monte Carlo simulations for impurity problems allow --within dynamical mean field theory-- for a more thorough investigation of the two-band Hubbard model with narrow/wide band and SU(2)-symmetric Hund's exchange. The nature of this transition has been controversial, and we establish that an orbital-selective Mott-Hubbard transition exists. Thereby, the wide band still shows metallic behavior after the narrow band became insulating -not a pseudogap as for an Ising Hund's exchange. The coexistence of two solutions with metallic wide band and insulating or metallic narrow band indicates, in general, first-order transitions. | |
| dc.description | 4 pages, 3 figures; 2nd version as published in Phys. Rev. B (R); minor corrections, putting more emphasis on differences in spectra when comparing SU(2) and Ising Hund's exchange | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0504040 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0504040 | |
| dc.identifier | Phys. Rev. B 72, 201102(R) (2005) | |
| dc.identifier | doi:10.1103/PhysRevB.72.201102 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/100460 | |
| dc.subject | Statistical Mechanics | |
| dc.title | Orbital-selective Mott-Hubbard transition in the two-band Hubbard model | |
| dc.type | text |