238 citations · 795 across the 30 of their papers we have counts for
30 papers
Ultrafast decoupling of quasiparticles and spin fluctuations in superconducting cuprates
Yuto Taniguchi, Ryo Kato, Tatsuya Amano +10
Understanding how quasiparticles are generated following a rapid quench of superconductivity in high-Tc cuprates is a key unresolved problem in nonequilibrium superconductivity. He…
Low-temperature giant coercivity in CoGaGe (=2.4 to 3.2)
Jiro Kitagawa, Himawari Nomura, Terukazu Nishizaki
The observation of giant coercivity exceeding 20 kOe at low temperatures in several transition-metal-based compounds has attracted significant attention from a fundamental perspect…
Metallurgy, superconductivity, and hardness of a new high-entropy alloy superconductor Ti-Hf-Nb-Ta-Re
Takuma Hattori, Yuto Watanabe, Terukazu Nishizaki +5
We explored quinary body-centered cubic (bcc) high-entropy alloy (HEA) superconductors with valence electron concentrations (VECs) ranging from 4.6 to 5.0, a domain that has receiv…
Superconductivity and hardness of the equiatomic high-entropy alloy HfMoNbTiZr
Jiro Kitagawa, Kazuhisa Hoshi, Yuta Kawasaki +3
We have found that body-centered cubic (bcc) HfMoNbTiZr is a type-II BCS high-entropy alloy (HEA) superconductor with a superconducting critical temperature of =4.1 K…
Large Hall angle of vortex motion in high- cuprate superconductors revealed by microwave flux-flow Hall effect
R. Ogawa, F. Nabeshima, T. Nishizaki +1
We investigated the nature of the quasi-particle state in the vortex core by means of the flux-flow Hall effect measurements at 15.8 GHz. We measured the flux-flow Hall effect in c…
Competition between ferromagnetic and antiferromagnetic states in Al8.5-xFe23Ge12.5+x (0<=x<=3)
Jiro Kitagawa, Genta Yakabe, Akinori Nakayama +2
Polycrystalline Al7+xFe23Ge14-x-type orthorhombic Al8.5-xFe23Ge12.5+x (0<=x<=3) compounds were studied by X-ray diffraction measurement, metallographic examination, and magnetizati…