84 citations · 990 across the 49 of their papers we have counts for
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Pyrochlore Oxide Hg2Os2O7 on Verge of Metal-Insulator Boundary
Kota Kataoka, Daigorou Hirai, Akihiro Koda +3
Semimetallic osmium pyrochlore oxide Cd2Os2O7 undergoes a magnetic transition to an all-in-all-out (AIAO)-type order at 227 K, followed by a crossover to an AIAO insulator at aroun…
Unusual Resistive Transitions in the Nodal-Line Semimetallic Superconductor NaAlSi
Daigorou Hirai, Toshiya Ikenobe, Takahiro Yamada +2
NaAlSi is a quasi-two-dimensional semimetal with superconductivity below Tc = 6.8 K and a band structure characterized by nodal lines near the Fermi level and potential topological…
Interplay between quadrupolar and magnetic interactions in 5 double perovskite BaMgReO under pressure
Hiroto Arima, Yoshiaki Oshita, Daigorou Hirai +2
We measured the electrical resistivity, AC magnetic susceptibility, and specific heat of the cubic double perovskite BaMgReO under pressure. The application of pressure lea…
Dimer Crystallization Induced by Elemental Substitution in the Honeycomb Lattice of Ru1-xOsxCl3
Kota Kataoka, Dirk Wulferding, Takeshi Yajima +5
Substitution effects of Os for Ru in α-RuCl3 are investigated in a wide composition range of 0 =< x =< 0.67 in Ru1-xOsxCl3 by X-ray and electron diffraction, magnetic susceptibilit…
Phase transition in the 5d1 double perovskite Ba2CaReO6 induced by high magnetic field
Hajime Ishikawa, Daigorou Hirai, Akihiko Ikeda +6
Magnetic properties of an antiferromagnetic double perovskite oxide Ba2CaReO6, where Re6+ (5d1) ions with large spin-orbit coupling are arranged on the face-centered-cubic lattice,…
Extremely large magnetoresistance in the hourglass Dirac loop chain metal β-ReO
Daigorou Hirai, Takahito Anbai, Shinya Uji +2
The transport and thermodynamic properties of -ReO crystallizing in a nonsymmorphic structure were studied using high-quality single crystals. An extremely large magnetore…
Anisotropic Triangular Lattice Realized in Rhenium Oxychlorides A3ReO5Cl2 (A = Ba and Sr)
Daigorou Hirai, Takeshi Yajima, Kazuhiro Nawa +2
We report the synthesis, crystal structure, and magnetic properties of two new quantum antiferromagnets A3ReO5Cl2 (A = Sr and Ba). The crystal structure is isostructural with the m…
Possible quadrupole order in tetragonal Ba2CdReO6 and chemical trend in the ground states of 5d1 double perovskites
Daigorou Hirai, Zenji Hiroi
The synthesis and physical properties of the double perovskite (DP) compound Ba2CdReO6 with the 5d1 electronic configuration are reported. Three successive phases originating from…
Superconductivity in the Topological Nodal-line Semimetal NaAlSi
Takahiro Yamada, Daigorou Hirai, Hisanori Yamane +1
NaAlSi is an sp electron superconductor crystallizing in a layered structure of the anti-PbFCl type with a relatively high transition temperature Tc of ~7 K. Recent electronic stat…