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177 papers
Theoretical designing of multiband Nickelate and Palladate superconductors with configuration
Naoya Kitamine, Masayuki Ochi, Kazuhiko Kuroki
In a previous study, we proposed a possibility of high superconductivity in mixed-anion nickelates with electron configuration. The theory was based on the fact tha…
Possible high Superconductivity in LaNiO under High Pressure through Manifestation of a Nearly-Half-Filled Bilayer Hubbard Model
Hirofumi Sakakibara, Naoya Kitamine, Masayuki Ochi +1
Inspired by a recent experiment showing that LaNiO exhibits high superconductivity under high pressure, we theoretically revisit the possibility of superconductiv…
Weak antilocalization induced by Se substitution in layered BiCh-based (Ch = S, Se) superconductors LaOFBiSSe
Kazuhisa Hoshi, Hiroto Arima, Noriyuki Kataoka +6
We report transport properties for layered BiCh2-based (Ch = S, Se) superconductors LaO1-xFxBiS2-ySey (x = 0.2, 0.5, y = 0-1.05) and the observation of weak antilocalization (WAL).…
Field-tunable Weyl points and large anomalous Hall effects in degenerate magnetic semiconductor EuMgBi
M. Kondo, M. Ochi, R. Kurihara +10
Magnets, with topologically-nontrivial Dirac/Weyl points, have recently attracted significant attention owing to the unconventional physical properties, such as large anomalous Hal…
Enhanced superconductivity and moderate spin fluctuations suppressed at low energies in heavily electron-doped La1111-based superconductor
T. Kouchi, S. Nishioka, K. Suzuki +7
To elucidate the origin of re-enhanced high- phase in the heavily electron-doped Fe-pnictides, systematic As NMR studies are performed on heavily electron-doped LaFe$Pn…
First-principles study of defect formation energies in LaOS ( Sb, Bi)
Masayuki Ochi, Kazuhiko Kuroki
We theoretically investigate defect formation energies in LaOS (Sb, Bi) using first-principles calculation. We find that the oxygen vacancy is relatively stable, where i…