231 citations · 484 across the 9 of their papers we have counts for
9 papers
Quantum dynamics of hydrogen in iron-based superconductor LaFeAsO0.9D0.1 measured with inelastic neutron spectroscopy
Jun-ichi Yamaura, Haruhiro Hiraka, Soshi Iimura +13
Inelastic neutron scattering was performed for an iron-based superconductor LaFeAsO0.9D0.1, where most of D (deuterium) replaces oxygen, while a tiny amount goes into interstitial…
Phase transition in CaFeAsH: bridging 1111 and 122 iron-based superconductors
Yoshinori Muraba, Soshi Iimura, Satoru Matsuishi +5
Iron-based superconductors can be categorized as two types of parent compounds by considering the nature of their temperature-induced phase transitions; namely, first order transit…
Hydrogen-substituted superconductors SmFeAsO1-xHx misidentified as oxygen-deficient SmFeAsO1-x
Yoshinori Muraba, Soshi Iimura, Satoru Matsuishi +1
We investigated the preferred electron dopants at the oxygen sites of 1111-type SmFeAsO by changing the atmospheres around the precursor with the composition of Sm:Fe:As:O = 1:1:1:…
Superconductivity at 52 K in hydrogen-substituted LaFeAsO1-xHx under high pressure
Hiroki Takahashi, Hideto Soeda, Muga Nukii +6
The 1111-type iron-based superconductor LnFeAsO1-xFx (Ln stands for lanthanide) is the first material with a Tc above 50 K, other than cuprate superconductors. Electron doping into…
La-substituted CaFeAsH superconductor with Tc = 47 K
Yoshinori Muraba, Satoru Matsuishi, Hideo Hosono
La-substituted CaFeAsH,(Ca1-xLax)FeAsH, were synthesized by the solid state reaction at 1173 K under high pressure of 2.5 GPa. The r-T anomaly corresponding to tetragonal to orthor…
Enhancing the three-dimensional electronic structure in 1111-type iron arsenide superconductors by H-substitution
Yoshinori Muraba, Satoru Matsuishi, Hideo Hosono
The 1111-type iron arsenide hydride CaFe1-xCoxAsH was synthesized by high-pressure solid-state reaction, and its electronic structure and superconducting properties were investigat…
Two-dome structure in electron-doped iron arsenide superconductors
Soshi Iimura, Satoru Matuishi, Hikaru Sato +6
Iron arsenide superconductors based on the material LaFeAsO1-xFx are characterized by a two-dimensional Fermi surface (FS) consisting of hole and electron pockets yielding structur…
Hydrogen in layered iron arsenide: indirect electron doping to induce superconductivity
Taku Hanna, Yoshinori Muraba, Satoru Matsuishi +3
Utilizing the high stability of calcium and rare earth hydrides, CaFeAsF1-xHx (x = 0.0-1.0) and SmFeAsO1-xHx (x = 0.0-0.47) have been first synthesized using high pressure to form…
High Pressure Synthesis of Indirectly electron-doped 122 Iron Superconductor Sr1-xLaxFe2As2 with a maximum Tc = 22 K
Yoshinori Muraba, Satoru Matsuishi, Sung-Wng Kim +3
Compounds of Sr1-xLaxFe2As2 were synthesized by solid state reaction at 1273 K, under pressures of 2 or 3 GPa. The Sr1-xLaxFe2As2 phase was dominant up to x = 0.5, and superconduct…