Metal-insulator transition in a degenerate Hubbard model

Mahadevan, Priya ; Sarma, D. D. (1999) Metal-insulator transition in a degenerate Hubbard model Physical Review B: Condensed Matter and Materials Physics, 59 (3). pp. 1739-1742. ISSN 1098-0121

Full text not available from this repository.

Official URL:

Related URL:


We have studied the metal-insulator transition at integer fillings in a triply degenerate Hubbard model using the Lanczos method. The critical Coulomb interaction strength Uc is found to depend strongly on the band filling, with Uc~√3W(W is the bandwidth) at half filling for this case with threefold degeneracy. We discuss the implications of our results on metal-insulator transitions in strongly correlated systems in general, and on the unusual electronic ground state of the alkali-metal-doped fullerenes, in particular.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:46433
Deposited On:04 Jul 2011 11:53
Last Modified:04 Jul 2011 11:53

Repository Staff Only: item control page