A. Koda

activity

20142026

most citedBipartite magnetic parent phases in the iron-oxypnictide superconductor

131 citations · 138 across the 9 of their papers we have counts for

collaborators

9 papers

cond-mat.supr-con2026

Superconductivity on the verge of metal-insulator transition in Cu $_{1 - x}$ Zn $_{x}$ Ir $_{2}$ S $_{4}$ probed by $μ$ SR

K. M. Kojima, M. Miyazaki, M. Hiraishi +6

The thiospinel CuIr $_{2}$ S $_{4}$ undergoes a metal-insulator transition below $\approx$ 230 K, which is suppressed by substitution of Cu with Zn (Cu $_{1 - x}$ Zn $_{x}$ Ir $_{2}$ S $_{4}$ ) to induce…

cond-mat.str-el2024

Field-Induced Criticality in YbCu4Au

T. Taniguchi, K. Osato, H. Okabe +19

YbCu4Au is a unique material exhibiting multiple quantum fluctuations simultaneously. In this study, we investigated the field-induced criticality in YbCu4Au, based on comprehensiv…

cond-mat.mtrl-sci2024★ 1 cited

Muon spin relaxation in mixed perovskite (LaAlO $_{3}$ ) $_{x}$ (SrAl $_{0.5}$ Ta $_{0.5}$ O $_{3}$ ) $_{1 - x}$ with $x ≃ 0.3$

Takashi U. Ito, Wataru Higemoto, Akihiro Koda +2

We report on muon spin relaxation ( $μ^{+}$ SR) measurements in a mixed perovskite compound, (LaAlO $_{3}$ ) $_{x}$ (SrAl $_{0.5}$ Ta $_{0.5}$ O $_{3}$ ) $_{1 - x}$ with $x ≃ 0.3$ (LSAT), which is…

cond-mat.mtrl-sci2024★ 3 cited

Local electronic structure of dilute hydrogen in $β$ -MnO $_{2}$

H. Okabe, M. Hiraishi, A. Koda +7

The electronic and magnetic states of $β$ -MnO $_{2}$ in terms of hydrogen impurities have been investigated by muon spin rotation ( $μ$ SR) technique combined with density-functional…

cond-mat.str-el2023

Quantum Criticality in YbCu4Ni

Kotaro Osato, Takanori Taniguchi, Hirotaka Okabe +12

We report on the quantum criticality of YbCu $_{4}$ Ni as revealed by our combined micro- and macro-measurements. We determine the crystal structure of YbCu $_{4}$ Ni with site mixing by n…

cond-mat.str-el2023

Magnetic Instability of Pr3Ru4Sn13

Takanori Taniguchi, Shinnosuke Kitayama, Hirotaka Okabe +4

We report on the quantum criticality of Pr $_{3}$ Ru $_{4}$ Sn $_{13}$ revealed by our new material research. Pr $_{3}$ Ru $_{4}$ Sn $_{13}$ has been synthesized by flux growth and characterized by…

physics.ins-det2023★ 1 cited

Development of Transient $μ$ SR Method for High-Flux Pulsed Muons

S. Nishimura, H. Okabe, M. Hiraishi +4

In order to expand the applicability of muon spin rotation, relaxation, and resonance ( $μ$ SR) experiments with pulsed muons and to make effective use of the high-flux beam, we have…

cond-mat.str-el2014★ 131 cited

Bipartite magnetic parent phases in the iron-oxypnictide superconductor

Masatoshi Hiraishi, Soshi Iimura, Kenji M. Kojima +19

High-temperature (high- $T_{c}$ ) superconductivity appears as a consequence of the carrier-doping of an undoped parent compound exhibiting antiferromagnetic order; thereby, grou…

cond-mat.str-el2014★ 2 cited

Cooperative order in the weakly magnetic domain of LaFeAsO $_{1 - x}$ F $_{x}$ near the doping phase boundary

M. Hiraishi, R. Kadono, M. Miyazaki +6

Spatial phase separation into mesoscopic domains of non-magnetic [superconducting (SC) below Tc = 25.5 K] and two kinds of magnetic phases, one showing disordered spin density wave…

Superconductivity on the verge of metal-insulator transition in Cu1−x​Znx​Ir2​S4​ probed by μSR

Field-Induced Criticality in YbCu4Au

Muon spin relaxation in mixed perovskite (LaAlO3​)x​(SrAl0.5​Ta0.5​O3​)1−x​ with x≃0.3

Local electronic structure of dilute hydrogen in β-MnO2​