8 papers
Fluctuation exchange study on the electron-hole asymmetry of the superconductivity across 1/3 filling in the trilayer Hubbard model
Yushi Yamada, Masataka Kakoi, Masayuki Ochi +1
We study within the fluctuation exchange approximation the trilayer Hubbard model where three layers of the Hubbard model are coupled by large interlayer hoppings so that the overl…
Superconductivity in doped spin multimer systems
Ritsuki Hirabayashi, Masataka Kakoi, Ryota Ueda +2
Binding energy, which quantifies pair formation, is a key factor in the emergence of superconductivity. Here, we show that even when multiple spins are complexly coupled, hole-dope…
Pairing properties of correlated three-leg ladders with strong interchain couplings near 1/3 filling
Yushi Yamada, Tatsuya Kaneko, Masataka Kakoi +2
We investigate the ground-state properties of correlated three-leg ladders near 1/3 filling. We apply the density-matrix renormalization group method to the three-leg t-J ladder wi…
Mesoscopic scattering dynamics under generic uniform SU(2) gauge fields: Spin-momentum relaxation and coherent backscattering
Masataka Kakoi, Christian Miniatura, Keith Slevin
We investigate the time- and momentum-resolved dynamics of matter waves undergoing elastic scattering from a disordered potential in the presence of spatially uniform SU(2) gauge f…
Coherent transport in two-dimensional disordered potentials under spatially uniform SU(2) gauge fields
Masataka Kakoi, Christian Miniatura, Keith Slevin
We study interference effects in the dynamics of a spin- particle propagating in two dimensions in a disordered potential and subject to a generalized spin-orbit coupling. Wit…
Spin-fluctuation-mediated chiral -wave superconductivity in the - lattice with an incipient flat band
Masataka Kakoi, Kazuhiko Kuroki
We study anisotropic superconductivity in the nearly quarter-filled - lattice. We analyze an extended Hubbard model with off-site attractive interactions within…