222 citations · 413 across the 13 of their papers we have counts for
13 papers
Pressure-induced phase transition in the - square lattice antiferromagnet RbMoOPOCl
Hikaru Takeda, Touru Yamauchi, Masashi Takigawa +2
We report results of magnetization and P NMR measurements under high pressure up to 6.4~GPa on RbMoOPOCl, which is a frustrated square-lattice antiferromagnet with compe…
Pressure-Induced Restoration of the Reversed Crystal-Field Splitting in -SrCrO
Ryo Takahashi, Tomoki Yamaguchi, Koudai Sugimoto +3
Motivated by an experimental finding that the successive phase transitions in -SrCrO observed at ambient pressure ceases to exist under high pressures, we carry out the…
Magnetostriction studies up to megagauss fields using fiber Bragg grating technique
Akihiko Ikeda, Yasuhiro H. Matsuda, Daisuke Nakamura +13
We here report magnetostriction measurements under pulsed megagauss fields using a high-speed 100 MHz strain monitoring system devised using fiber Bragg grating (FBG) technique wit…
The Effects of Stoichiometry and Substitution in quasi-one-dimensional iron-chalcogenide BaFeS
Yasuyuki Hirata, Sachiko Maki, Jun-ichi Yamaura +2
The effects of off-stoichiometry and elemental substitution on electronic properties of iron-based ladder compound BaFeS are investigated. Resistivity and magnetization…
Pressure-induced Superconductivity in the Iron-based Ladder Material BaFe2S3
Hiroki Takahashi, Akira Sugimoto, Yusuke Nambu +13
All the iron-based superconductors identified to date share a square lattice composed of Fe atoms as a common feature, despite having different crystal structures. In copper-based…
Local spin and charge properties of beta-Ag0.33V2O5 studied by 51V NMR
A. Hisada, N. Fujiwara, T. Yamauchi +1
Local spin and charge properties were studied on beta-Ag0.33V2O5, a pressure-induced superconductor, at ambient pressure using 51V-NMR and zero-field-resonance (ZFR) techniques. Th…
Pressure-induced changes in the optical properties of quasi-one-dimensional -NaVO
Simone Frank, Christine A. Kuntscher, Ivan Gregora +2
The pressure-induced changes in the optical properties of -NaVO single crystals at room temperature were studied by polarization-dependent Raman and far-infrare…
Site-Selective NMR in the Quasi-1D Conductor beta-Sr0.33V2O5
T. Waki, M. Takigawa, T. Yamauchi +3
We report 51V NMR experiments in the metallic phase of the quasi-one-dimensional (1D) conductor beta-Sr0.33V2O5. The Knight shift and the quadrupole splitting of all six vanadium s…
High-pressure study on the superconducting pyrochlore oxide Cd2Re2O7
Zenji Hiroi, Touru Yamauchi, Takahiro Yamada +6
Superconducting and structural phase transitions in a pyrochlore oxide Cd2Re2O7 are studied under high pressure by x-ray diffraction and electrical resistivity measurements. A rich…
Absence of Edge Localized Moments in the Doped Spin-Peierls System CuGeSiO
Jun Kikuchi, Takao Matsuoka, Kiyoichiro Motoya +2
We report the observation of nuclear quadrupole resonance (NQR) of Cu from the sites near the doping center in the spin-Peierls system CuGeSiO. The signal appears…
Spin Diffusion in the S=1/2 Quasi One-Dimensional Antiferromagnet α-VO(PO_3)_2 via 31P NMR
Jun Kikuchi, Naohiko Kurata, Kiyoichiro Motoya +2
Low-frequency spin dynamics in the S=1/2 antiferromagnetic spin-chain compound α-VO(PO_3)_2 has been studied by means of 31P NMR. The nuclear spin-lattice relaxation rate 1/T_1 at…
Modeling of the Magnetic Susceptibilities of the Ambient- and High-Pressure Phases of (VO)_{2}P_{2}O_{7}
D. C. Johnston, T. Saito, M. Azuma +3
The magnetic susceptibilities chi versus temperature T of powders and single crystals of the ambient-pressure (AP) and high-pressure (HP) phases of (VO)_{2}P_{2}O_{7} are analyzed…
Coexistence of double alternating antiferromagnetic chains in (VO)_2P_2O_7 : NMR study
Jun Kikuchi, Kiyoichiro Motoya, Touru Yamauchi +1
Nuclear magnetic resonance (NMR) of 31P and 51V nuclei has been measured in a spin-1/2 alternating-chain compound (VO)_2P_2O_7. By analyzing the temperature variation of the 31P NM…