47 citations · 149 across the 12 of their papers we have counts for
13 papers · 1 filter
KCrO predicted as a half-metallic ferromagnet: Scenario for a metal-insulator transition
M. Sakamaki, T. Konishi, Y. Ohta
Based on the first-principles electronic structure calculations, we predict that a chromium oxide KCrO of hollandite type should be a half-metallic ferromagnet where…
Ab initio electronic structure calculation of hollandite vanadate KVO
M. Sakamaki, S. Horiuchi, T. Konishi +1
An \textit{ab initio} electronic structure calculation based on the generalized gradient approximation in the density functional theory is carried out to study the basic electronic…
Spin-triplet f-wave pairing due to three-site cyclic-exchange ferromagnetic interactions
S. Nishimoto, Y. Ohta
Ferromagnetiam and superconductivity in a two-dimensional triangular-lattice Hubbard model are studied using the density-matrix renormalization group method. We propose a mechanism…
Antiferromagnetism versus Kondo screening in the two-dimensional periodic Anderson model at half filling: Variational cluster approach
S. Horiuchi, S. Kudo, T. Shirakawa +1
The variational cluster approach (VCA) based on the self-energy functional theory is applied to the two-dimensional symmetric periodic Anderson model at half filling. We calculate…
Superconductivity in a model of two Hubbard chains coupled with ferromagnetic exchange interaction
T. Shirakawa, S. Nishimoto, Y. Ohta
We study the ground-state properties of the double-chain Hubbard model coupled with ferromagnetic exchange interaction by using the weak-coupling theory, density-matrix renormaliza…
Coexistence of distinct charge fluctuations in -(BEDT-TTF)X
S. Nishimoto, M. Shingai, Y. Ohta
Using the Lanczos exact-diagonalization and density-matrix renormalization group methods, we study the extended Hubbard model at quarter filling defined on the anisotropic triangul…