Generalization of the iterative perturbation theory and metal-insulator transition in multi-orbital Hubbard bands

Simple item page
dc.creatorFujiwara, Takeo
dc.creatorYamamoto, Susumu
dc.creatorIshii, Yasushi
dc.date2002-11-08
dc.date.accessioned2026-07-07T08:47:31Z
dc.date.available2026-07-07T08:47:31Z
dc.descriptionThe iterative perturbation theory of the dynamical mean field theory is generalized to arbitrary electron occupation in case of multi-orbital Hubbard bands. We present numerical results of doubly degenerate Eg bands in a simple cubic lattice. The spectrum shows the electron ionization and affinity levels of different electron occupations. For sufficiently large Coulomb integral, a gap opens in the spectrum at integer filling of electrons and the system becomes insulator. The present scheme is easy to combine with the LSDA electronic structure theory.
dc.description4 pages 2 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0211159
dc.identifierhttp://arxiv.org/abs/cond-mat/0211159
dc.identifierJ. Phys. Soc. Jpn., 72, 777-780 (2003)
dc.identifierdoi:10.1143/JPSJ.72.777
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/143624
dc.subjectStrongly Correlated Electrons
dc.titleGeneralization of the iterative perturbation theory and metal-insulator transition in multi-orbital Hubbard bands
dc.typetext

Files

Collections

arXiv