H. Usui

collaborators

3 papers

cond-mat.mtrl-sci2026

Ideal band structures for high-performance thermoelectric materials with band convergence

Yuya Hattori, Hidetomo Usui, Yoshikazu Mizuguchi

We investigate optimal band structures in band-converged systems to achieve high zT using numerical calculations based on a virtual spectral conductivity model. We consider a two p…

cond-mat.supr-con2025

Theoretical study on the possibility of high $T_{c}$ s $\pm$ -wave superconductivity in the heavily hole-doped infinite layer nickelates

Hirofumi Sakakibara, Ryota Mizuno, Masayuki Ochi +2

We theoretically propose a possibility of realizing high $T_{c}$ superconductivity having $s \pm$ -wave symmetry in the heavily hole-doped infinite layer nickelates La $_{1 - x}$ Sr $_{x}$ NiO…

cond-mat.supr-con2025

Theoretical study of the crystal structure of the bilayer nickel oxychloride Sr $_{3}$ Ni $_{2}$ O $_{5}$ Cl $_{2}$ and analysis of possible unconventional superconductivity

Masayuki Ochi, Hirofumi Sakakibara, Hidetomo Usui +1

The discovery of superconductivity under high pressure with $T_{c}$ exceeding 80 K in a bilayer nickelate La $_{3}$ Ni $_{2}$ O $_{7}$ has led to a strong desire to realize similar high $T_{c}$ p…

Ideal band structures for high-performance thermoelectric materials with band convergence

Theoretical study on the possibility of high Tc​ s±-wave superconductivity in the heavily hole-doped infinite layer nickelates

Theoretical study of the crystal structure of the bilayer nickel oxychloride Sr3​Ni2​O5​Cl2​ and analysis of possible unconventional superconductivity

Theoretical study on the possibility of high $T_{c}$ s $\pm$ -wave superconductivity in the heavily hole-doped infinite layer nickelates

Theoretical study of the crystal structure of the bilayer nickel oxychloride Sr $_{3}$ Ni $_{2}$ O $_{5}$ Cl $_{2}$ and analysis of possible unconventional superconductivity