119 citations · 218 across the 6 of their papers we have counts for
12 papers
Multiorbital Effects on Antiferromagnetism in Fe Pnictides
Katsunori Kubo, Peter Thalmeier
We apply a Hartree-Fock approximation to a two-orbital model proposed for Fe pnictide superconductors. It is found that the antiferromagnetic (AFM) order with the ordering vector Q…
Variational Monte Carlo study of ferromagnetism in the two-orbital Hubbard model on a square lattice
Katsunori Kubo
To understand effects of orbital degeneracy on magnetism, in particular effects of Hund's rule coupling, we study the two-orbital Hubbard model on a square lattice by a variational…
Ferromagnetism and orbital order in the two-orbital Hubbard model
Katsunori Kubo
We investigate spin and orbital states of the two-orbital Hubbard model on a square lattice by using a variational Monte Carlo method at quarter-filling, i.e., the electron number…
Fulde-Ferrell-Larkin-Ovchinnikov State in the absence of a Magnetic Field
Katsunori Kubo
We propose that in a system with pocket Fermi surfaces, a pairing state with a finite total momentum q_tot like the Fulde-Ferrell-Larkin-Ovchinnikov state can be stabilized even wi…
Pairing symmetry in a two-orbital Hubbard model on a square lattice
Katsunori Kubo
We investigate superconductivity in a two-orbital Hubbard model on a square lattice by applying fluctuation exchange approximation. In the present model, the symmetry of the two or…
Orbital-Controlled Superconductivity in f-Electron Systems
Katsunori Kubo, Takashi Hotta
We propose a concept of superconductivity controlled by orbital degree of freedom taking CeMIn5 (M= Co, Rh, and Ir) as typical examples. A microscopic multiorbital model for CeMIn5…