534 citations · 1.1k across the 9 of their papers we have counts for
9 papers
Rattling-Induced Superconductiviy in the Beta-Pyrochlore Oxides AOs2O6
Yohei Nagao, Jun-ichi Yamaura, Hiroki Ogusu +2
The superconducting properties of two beta-pyrochlore oxides, CsOs2O6 and RbOs2O6, are studied by thermodynamic and transport measurements using high-quality single crystals. It is…
Vesignieite BaCu3V2O8(OH)2 as a Candidate Spin-1/2 Kagome Antiferromagnet
Yoshihiko Okamoto, Hiroyuki Yoshida, Zenji Hiroi
A polycrystalline sample of vesignieite BaCu3V2O8(OH)2 comprising a nearly ideal kagome lattice composed of Cu2+ ions carrying spin 1/2 has been synthesized and studied by magnetiz…
Spin-1/2 kagome compounds: volborthite vs herbertsmithite
Z Hiroi, H Yoshida, Y Okamoto +1
Two kagome compounds, volborthite Cu3V2O7(OH)2-2H2O and herbertsmithite ZnCu3(OH)6Cl2, are compared in order to derive information about the intrinsic properties of the spin-1/2 ka…
Band Jahn-Teller Instability and Formation of Valence Bond Solid in a Mixed-Valent Spinel Oxide LiRh2O4
Yoshihiko Okamoto, Seiji Niitaka, Masaya Uchida +7
We have synthesized a new spinel oxide LiRh2O4 with a mixed-valent configuration of Rh3+ and Rh4+. At room temperature it is a paramagnetic metal, but on cooling, a metal-insulator…
Unique Phase Transition on Spin-2 Triangular Lattice of Ag2MnO2
Hiroyuki Yoshida, Sascha Ahlert, Martin Jansen +3
Ag2MnO2 is studied as a possible candidate compound for an antiferromagnetic XY spin model on a triangular lattice. In spite of the large Curie-Weiss temperature of -430 K found in…
Superconductivity in RhGa and IrGa without Inversion Symmetry
T. Shibayama, M. Nohara, H. Aruga Katori +3
Superconductivity with 2 K was discovered in the intermetallic binary compounds RhGa and IrGa. This is the first observation of superconductivi…