793 citations · 10.5k across the 194 of their papers we have counts for
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Effects of Nonmagnetic Impurity Doping on Spin Ladder System
Youichirou Iino, Masatoshi Imada
Effects of nonmagnetic impurity doping on an AF spin-1/2 Heisenberg ladder system are studied by the QMC method. A single nonmagnetic impurity induces a localized spin-1/2 moment a…
Critical Exponents of the Metal-Insulator Transition in the Two-Dimensional Hubbard Model
Nobuo Furukawa, Fakher F. Assaad, Masatoshi Imada
We study the filling-controlled metal-insulator transition in the two-dimensional Hubbard model near half-filling with the use of zero temperature quantum Monte Carlo methods. In t…
Impurity Effect on Spin Ladder System
Yukitoshi Motome, Nobuyuki Katoh, Nobuo Furukawa +1
Effects of nonmagnetic impurity doping in a spin ladder system with a spin gap are investigated by the exact diagonalization as well as by the variational Monte Carlo calculations.…
Macroscopic Quantum Tunneling of a Fluxon in a Long Josephson Junction
Takeo Kato, Masatoshi Imada
Macroscopic quantum tunneling (MQT) for a single fluxon moving along a long Josephson junction is studied theoretically. To introduce a fluxon-pinning force, we consider inhomogene…
Spin-gap phase in nearly-half-filled one-dimensional conductors coupled with phonons
K. Yonemitsu, M. Imada
Asymptotic properties of nearly-half-filled one-dimensional conductors coupled with phonons are studied through a renormalization group method. Due to spin-charge coupling via elec…
Superfluid-Insulator Transition of Interacting Multi-Component Bosons
Yukitoshi Motome, Masatoshi Imada
Various types of superfluid-insulator transitions are investigated for two-component lattice boson systems in two dimensions with on-site hard-core repulsion and the component-depe…