34 citations · 59 across the 2 of their papers we have counts for
5 papers
Superconducting mechanism for the cuprate BaCuO based on a multiorbital Lieb lattice model
Kimihiro Yamazaki, Masayuki Ochi, Daisuke Ogura +4
For the recently discovered cuprate superconductor , we propose a lattice structure which resembles the model considered by Lieb to represent the vastly o…
Strongly enhanced superconductivity due to finite energy spin fluctuations induced by an incipient band : a FLEX study on the bilayer Hubbard model with vertical and diagonal interlayer hoppings
Karin Matsumoto, Daisuke Ogura, Kazuhiko Kuroki
We study the spin-fluctuation-mediated -wave superconductivity in the bilayer Hubbard model with vertical and diagonal interlayer hoppings. As in the two-leg ladder model wit…
Hidden kagome-lattice picture and origin of high conductivity in delafossite PtCoO
Hidetomo Usui, Masayuki Ochi, Sota Kitamura +8
We study the electronic structure of delafossite PtCoO to elucidate its extremely small resistivity and high mobility. The band exhibits steep dispersion near the Fermi level d…
Wide applicability of high pairing originating from coexisting wide and incipient narrow bands in quasi one dimension
Karin Matsumoto, Daisuke Ogura, Kazuhiko Kuroki
We study superconductivity in the Hubbard model on various quasi-one-dimensional lattices with coexisting wide and narrow bands originating from multiple sites within a unit cell,…
Possible high- superconductivity due to incipient narrow bands originating from hidden ladders in Ruddlesden-Popper compounds
Daisuke Ogura, Hideo Aoki, Kazuhiko Kuroki
We introduce a concept of hidden ladders for the bilayer Ruddlesden-Popper type compounds: While the crystal structure is bilayer, () orbitals in the relevant $t_{…