603 citations · 1.7k across the 14 of their papers we have counts for
14 papers
Beryllium Polyhydride Be4H8(H2)2 Synthesized at HP/HT
Takahiro Matsuoka, Hiroshi Fujihisa, Takahiro Ishikawa +6
We report the XRD and Raman scattering measurements in combination with DFT calculations that reveal the formation of beryllium polyhydride Be4H8(H2)2 by laser heating Be/H2 mixtur…
Hydrogen-Storing Salt NaCl(H) Synthesized at High Pressure and High Temperature
Takahiro Matsuoka, Shu Muraoka, Takahiro Ishikawa +7
X-ray diffraction and Raman scattering measurements, and first-principles calculations are performed to search for the formation of NaCl-hydrogen compound. When NaCl and H mi…
Superconductivity of Pure H3S Synthesis from Elemental Sulfur and Hydrogen
Harushige Nakao, Mari Einaga, Masafumi Sakata +5
Superconductive H3S synthesized from H2S is very poorly crystallized, and has excess sulfur as impurity (3H2S -> 2H3S + S). The phase transition process undergoes in sulfur excess…
Superconductivity of platinum hydride
Takahiro Matsuoka, Masahiro Hishida, Keiji Kuno +5
We report the ac magnetic susceptibility, electrical resistance, and X-ray diffraction measurements of platinum hydride (PtHx) in diamond anvil cells, which reveal its superconduct…
Successive spatial symmetry breaking under high pressure in the spin-orbit-coupled metal Cd2Re2O7
Jun-ichi Yamaura, Keiki Takeda, Yoichi Ikeda +4
The 5d-transition metal pyrochlore oxide Cd2Re2O7, which was recently suggested to be a prototype of the spin-orbit-coupled metal [Phys. Rev. Lett. 115, 026401 (2015)], exhibits an…
Crystal Structure of 200 K-Superconducting Phase of Sulfur Hydride System
Mari Einaga, Masafumi Sakata, Takahiro Ishikawa +6
This article reports the experimentally clarified crystal structure of a recently discovered sulfur hydride in high temperature superconducting phase which has the highest critical…
Pressure-induced unusual metallic state in EuNiO
Hisao Kobayashi, Shugo Ikeda, Yoshitaka Yoda +7
The perovskite antiferromagnetic ( 220 K) insulator EuNiO undergoes at ambient pressure a metal-to-insulator transition at = 460 K which is assoc…
Experimental and theoretical evidence for pressure-induced metallization in FeO with the rock-salt type structure
Kenji Ohta, R. E. Cohen, Kei Hirose +3
Electrical conductivity of FeO was measured up to 141 GPa and 2480 K in a laserheated diamond-anvil cell. The results show that rock-salt (B1) type structured FeO metallizes at aro…
Superconducting and Structural Transitions in the β-Pyrochlore Oxide KOs2O6 under High Pressure
Hiroki Ogusu, Nao Takeshita, Koichi Izawa +5
Rattling-induced superconductivity in the β-pyrochlore oxide KOs2O6 is investigated under high pressure up to 5 GPa. Resistivity measurements in a high-quality single crystal revea…
Pressure evolution of low-temperature crystal structure and bonding of 37 K FeSe superconductor
S. Margadonna, Y. Takabayashi, Y. Ohishi +6
FeSe with the PbO structure is a key member of the family of new high- iron pnictide and chalcogenide superconductors, as while it possesses the basic layered structural motif…
Pressure/temperature/substitution-induced melting of A-site charge disproportionation in Bi_(1-x)La_(x)NiO_3 (0 =< x =< 0.5)
S. Ishiwata, M. Azuma, M. Hanawa +8
Metal-insulator transitions strongly coupled with lattice were found in Bi1-xLaxNiO3. Synchrotron X-ray powder diffraction revealed that pressure (P ~ 3 GPa, T = 300 K), temperatur…
Transport and Magnetic Studies on the Spin State Transition of Pr1-xCaxCoO3 up to High Pressure
Toshiaki Fujita, Takeshi Miyashita, Yukio Yasui +11
Transport and magnetic measurements and structural and NMR studies have been carried out on (Pr1-yR'y)1-xAxCoO3 {R'=(rare earth elements and Y); A=(Ca, Ba and Sr)} at ambient press…
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…
Compressibility of the MgB2 Superconductor
K. Prassides, Y. Iwasa, T. Ito +9
Considerable excitement has been caused recently by the discovery that the binary boride system with stoichiometry MgB2 is superconducting at the remarkably high temperature of 39…