135 citations · 362 across the 28 of their papers we have counts for
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Orbital-Selective Coexistence of Interlayer Spin-Singlet Formation and SDW Order with Anomalous Spin Reconfiguration in Bilayer Nickelate LaNiO Revealed by O-NMR
H. Lee, M. Yashima, M. Kakoi +7
The spin structure of the spin density wave (SDW) order in the bilayer nickelate LaNiO has been investigated using site-selective O-NMR measurements on the inner…
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…
Study on the validity of IPT+parquet method as an impurity solver in DMFT focusing on orbital fluctuations
Aira Yamada, Ryota Mizuno, Masayuki Ochi +2
A breakdown of calculations with exact impurity solvers in the dynamical mean field theory in multiband systems easily occurs due to the expensive numerical cost. To overcome this…
Improvement of the simplification method for the local two-particle full-vertex towards precise frequency behavior
Ryota Mizuno, Kazuhiko Kuroki, Masayuki Ochi
Estimating the local two-particle vertex functions, which are crucial for capturing the spatial fluctuation of the effective field beyond the single-site DMFT, is still challenging…
- model for strongly correlated two-orbital systems: Application to bilayer nickelate superconductors
Tatsuya Kaneko, Masataka Kakoi, Kazuhiko Kuroki
We derive a - model applicable to strongly correlated two-orbital systems including bilayer nickelate superconductors. Using the Schrieffer-Wolff transformation, we exclude t…
Doublon-Holon Pairing State in Photodoped Mott Insulators
Ryota Ueda, Madhumita Sarkar, Zala Lenarčič +3
We demonstrate the existence of an unconventional pairing state in photodoped Mott insulators on ladder and quasi-two-dimensional geometries, characterized by quasi-long-range doub…
Nonreciprocal charge transport in polar Dirac metals with tunable spin-valley coupling
M. Kondo, M. Kimata, M. Ochi +7
Nonreciprocal charge transport in solids, where resistance is different between rightward and leftward currents, is a key function of rectifying devices in the modern electronics,…
Floquet engineering of effective pairing interactions in a doped band insulator
Yugo Takahashi, Hideo Miyamoto, Kazuhiko Kuroki +1
We investigate the pairing state in a doped band insulator under a periodic driving field. We employ a correlated fermionic model on a honeycomb lattice, in which pairing glue is o…
Ground-State Properties of the - Model for the CuO Double-Chain Structure
Tatsuya Kaneko, Satoshi Ejima, Koudai Sugimoto +1
We investigate the ground-state properties of a correlated model for the double-chain structure in cuprates. We consider the - model, in which the nearest-neighbor spin inter…
Multiband Metallic Ground State in Multilayered Nickelates LaNiO and LaNiO Probed by La-NMR at Ambient Pressure
Masataka Kakoi, Takashi Oi, Yujiro Ohshita +9
We report a La-NMR study of polycrystalline samples of multi()-layered nickelates, LaNiO () and LaNiO (), at ambient pressure.…
Photoinduced -pairing correlation in the Hubbard ladder
Ryota Ueda, Kazuhiko Kuroki, Tatsuya Kaneko
We investigate the staggered correlation of the on-site pairs, the so-called -pairing correlation, induced by pump electric fields in the Hubbard model on the ladder lattice. Em…