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First-principles Calculation of Effective Onsite Coulomb Interaction of 3d Transition Metals: Constrained Local Density Functional Approach with Maximally Localized Wannier Function
Kazuma Nakamura, Ryotaro Arita, Yoshihide Yoshimoto +1
We present a new ab initio method for calculating effective onsite Coulomb interactions of itinerant and strongly correlated electron systems. The method is based on constrained lo…
Some clarifications on cond-mat/0508763 by M. I. Katsnelson
M. Feldbacher, R. Arita, K. Held +1
Katsnelson submitted his Comment on our paper "Projective Quantum Monte Carlo Method for the Anderson Impurity Model and its Application to Dynamical Mean Field Theory" to Phys. Re…
Extended s-wave pairing originating from the band in NaCoO HO
Kazuhiko Kuroki, Seiichiro Onari, Yukio Tanaka +2
Motivated by recent experiments and band calculation results, we investigate the possibility of superconductivity originating from the band of NaCoOHO a…
Density-matrix renormalization group study of pairing when electron-electron and electron-phonon interactions coexist: effect of the electronic band structure
Masaki Tezuka, Ryotaro Arita, Hideo Aoki
Density-matrix renormalization group is used to study the pairing when both of electron-electron and electron-phonon interactions are strong in the Holstein-Hubbard model at half-f…
Nonlinear Transport in One-Dimensional Mott Insulator in Strong Electric Fields
Takashi Oka, Ryotaro Arita, Hideo Aoki
Time-dependent Schroedinger's equation is integrated for a one-dimensional strongly-correlated electron system driven by large electric fields. For larger electric fields, many-bod…
High T_c superconductivity due to coexisting wide and narrow bands: A fluctuation exchange study on the Hubbard ladder as a test case
Kazuhiko Kuroki, Takafumi Higashida, Ryotaro Arita
We propose that when the Fermi level lies within a wide band and also lies close to but not within a coexisting narrow band, high superconductivity may take place due to the…