11 citations · 24 across the 6 of their papers we have counts for
8 papers
Superconducting landscape of the strongly correlated bilayer Hubbard model
Motoharu Kitatani, Yusuke Nomura, Shiro Sakai +1
Coupling two strongly correlated layers opens a distinct route to repulsion-driven superconductivity. Yet the same interlayer coupling makes the optimization of superconductivity h…
Self-energy pole optimization of superconductivity in the bilayer Hubbard model
Taka-Shi Fujiwara, Shiro Sakai, Ryotaro Arita
We study the real-frequency structure of the self-energy in the bilayer Hubbard model, using the dynamical cluster approximation. At half filling, the Mott insulator-band insulator…
BCS-BEC crossover driven by small Fermi pockets of a high-Tc cuprate superconductor
Junhyeok Jeong, Yamato Enomoto, Yoshimitsu Kohama +16
Fermi arcs observed in underdoped cuprates have sparked debate over whether they represent segments of a large Fermi surface or small Fermi pockets. This ambiguity has long hindere…
Luttinger surface and exchange splitting induced by ferromagnetic fluctuations
Motoharu Kitatani, Yusuke Nomura, Shiro Sakai +1
Ferromagnetism in the single-orbital Hubbard model, which contains only local Coulomb repulsion and no explicit ferromagnetic exchange interactions, has been extensively studied. H…
Superconducting coherence boosted by outer-layer metallic screening in multilayered cuprates
Junhyeok Jeong, Kifu Kurokawa, Shiro Sakai +13
In multilayered high-Tc cuprates with three or more CuO2 layers per unit cell, the inner CuO2 planes (IPs) are spatially separated from the dopant layers and thus remain cleaner th…
Strong-coupling high- superconductivity in doped correlated band insulators
Yusuke Nomura, Motoharu Kitatani, Shiro Sakai +1
We explore the superconducting properties of the bilayer Hubbard model, which exhibits a high transition temperature () for an pairing, using a cluster extensi…
Magnetic structures and electronic properties of cubic-pyrochlore ruthenates from first principles
Marie-Therese Huebsch, Yuske Nomura, Shiro Sakai +1
The magnetic ground states of RuO and RuO with Pr, Gd, Ho, and Er, as well as Ca, Cd are predicted devising a combination of the cluster-multipo…
Pseudogap in electron-doped cuprates: Strong correlation leading to band splitting
M. Horio, S. Sakai, H. Suzuki +10
The pseudogap phenomena have been a long-standing mystery of the cuprate high-temperature superconductors. The pseudogap in the electron-doped cuprates has been attributed to band…