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Localization in ruthenates: magnetic and electronic properties of Ca(2-x)Sr(x)RuO(4)
V. I. Anisimov, I. A. Nekrasov, D. E. Kondakov +2
The electronic structures of the metallic and insulating phases of Ca(2-x)Sr(x)RuO(4) (0<= x <= 2) are calculated using LDA, LDA+U and Dynamical Mean-Field Approximation methods. F…
Multiexciton molecules in the hexaborides
T. A. Gloor, M. E. Zhitomirsky, T. M. Rice
We investigate multiexciton bound states in a semiconducting phase of divalent hexaborides. Due to three degenerate valleys in both the conduction and valence bands the binding ene…
Comment on "Electronic fine structure in the electron-hole plasma of SrB6"
M. E. Zhitomirsky, T. M. Rice, V. I. Anisimov
In this comment we point out several misleading conclusions reached by Rodriguez et al. [PRL 84, 3903 (2000) and cond-mat/0003201] about the details of the band structure in SrB_6…
A Bosonic Model of Hole Pairs
Th. Siller, M. Troyer, T. M. Rice +1
We numerically investigate a bosonic representation for hole pairs on a two-leg t-J ladder where hard core bosons on a chain represent the hole pairs on the ladder. The interaction…
Successive opening of the Fermi surface in doped N-leg Hubbard ladders
Urs Ledermann, Karyn Le Hur, T. M. Rice
We study the effect of doping away from half-filling in weakly (but finitely) interacting N-leg Hubbard ladders using renormalization group and bosonization techniques. For a small…