9 papers
Heterostructuring as Gateway to Electron Doping of Nickelate Superconductors
Chao Deng, Motoharu Kitatani, Guiwen Jiang +7
Despite enormous expenditures in the research field, the electron-doped side of nickelate superconductors remains uncharted territory. Substituting the trivalent rare-earth cations…
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…
Entanglement in the pseudogap regime of cuprate superconductors
Frederic Bippus, Juraj Krsnik, Motoharu Kitatani +4
We find a strongly enhanced entanglement within the pseudogap regime of the Hubbard model. This entanglement is estimated from the quantum Fisher information and, avoiding the ill-…
Superconducting phase diagram of finite-layer nickelates NdNiO
Andreas Hausoel, Simone Di Cataldo, Motoharu Kitatani +2
Following the successful prediction of the superconducting phase diagram for infinite-layer nickelates, here we calculate the superconducting vs. the number of lay…
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…
Modulated Dirac bands and integer hopping ratios in a honeycomb lattice of phenalenyl-tessellation molecules
Naoki Morishita, Kenshin Komatsu, Motoharu Kitatani +1
A family of nanographene molecules called phenalenyl-tessellation molecules (PTMs) exhibits two types of zero modes: a type that spreads over the entire…