163 citations · 839 across the 44 of their papers we have counts for
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Molecular dynamics of -polybutadiene across the glass transition revealed by muonated-radical spin relaxation
S. Takeshita, H. Okabe, M. Hiraishi +7
The local molecular motion of -polybutadiene, a typical polymeric material exhibiting a glass transition ( K), is investigated by the spin relaxation of muonate…
Correlation between ferroelectricity and torsional motion of acetyl groups in tris(4-acetylphenyl)amine observed by muon spin relaxation
J. G. Nakamura, M. Hiraishi, H. Okabe +4
It is demonstrated by muon spin relaxation and resonance experiments that the switchable spontaneous polarization of the organic ferroelectric compound tris(4-acetylphenyl)amine (T…
Slow polymer dynamics in poly(3-hexylthiophene) probed by muon spin relaxation
S. Takeshita, K. Hori, M. Hiraishi +5
The molecular dynamics of regioregulated poly(3-hexylthiophene) P3HT is investigated using muon spin relaxation (SR). The response of the SR spectra to a longitudinal magneti…
Nano-scale dynamics of hydrogen in VO studied by SR
H. Okabe, M. Hiraishi, A. Koda +4
Hydrogen dynamics in the nanoscale region of VO was investigated by muon spin rotation/relaxation (SR) technique. Positively charged muon acts as a light radioisotope of p…
Local electronic structure of dilute hydrogen in -MnO
H. Okabe, M. Hiraishi, A. Koda +7
The electronic and magnetic states of -MnO in terms of hydrogen impurities have been investigated by muon spin rotation (SR) technique combined with density-functional…
Photo-excited charge carrier lifetime enhanced by slow cation molecular dynamics in lead iodide perovskite FAPbI
M. Hiraishi, A. Koda, H. Okabe +4
Using muon spin relaxation (SR) measurements on formamidinium lead iodide [FAPbI, where FA denotes HC(NH] we show that, among the five structurally distinct phases of…
Local electronic structure of dilute hydrogen in -GaO probed by muons
M. Hiraishi, H. Okabe, A. Koda +6
The local electronic structure of muons (Mu) as dilute pseudo-hydrogen in single-crystalline -GaO has been studied by the muon spin rotation/relaxation (SR). High-pre…
Local electronic structure of interstitial hydrogen in MgH inferred from muon study
R. Kadono, M. Hiraishi, H. Okabe +2
Magnesium hydride has great potential as a solid hydrogen (H) storage material because of its high H storage capacity of 7.6 wt%. However, its slow hydrogenation and dehydrogenatio…
Organic Molecular Dynamics and Charge-carrier Lifetime in Lead Iodide Perovskite MAPbI
A. Koda, H. Okabe, M. Hiraishi +4
The long charge carrier lifetime of the hybrid organic-inorganic perovskites (HOIPs) is the key for their remarkable performance as a solar cell material. The microscopic mechanism…
Ambipolar Property of Isolated Hydrogen in Oxide Materials Revealed by Muon
M. Hiraishi, H. Okabe, A. Koda +2
The study on the electronic state of muon as pseudo-hydrogen (represented by the elemental symbol Mu) has long been appreciated as one of the few methods to experimentally access t…
Anomalous diamagnetism of electride electrons in transition metal silicides
M. Hiraishi, K. M. Kojima, H. Okabe +5
Intermetallic silicide compounds, LaScSi and YSi, known for being hydrogen (H) storage materials, are drawing attention as candidates for electrides in which anions are sub…
Electronic structure of interstitial hydrogen in In-Ga-Zn-O semiconductor simulated by muon
K. M. Kojima, M. Hiraishi, H. Okabe +7
We report on the local electronic structure of interstitial muon (Mu) as pseudo-hydrogen in In-Ga-Zn oxide (IGZO) semiconductor studied by muon spin rotation/relaxation (SR) exp…
Local Electronic Structure of Interstitial Hydrogen in Iron Disulfide
H. Okabe, M. Hiraishi, S. Takeshita +3
The electronic structure of interstitial hydrogen in a compound semiconductor FeS (naturally -type) is inferred from a muon study. An implanted muon (Mu, a pseudo-hydrogen)…
Electronic correlation in the quasi-two-dimensional electride YC
M. Hiraishi, K. M. Kojima, I. Yamauchi +10
Magnetic properties of the electride compound YC were investigated by muon spin rotation and magnetic susceptibility on two samples with different form (poly- and single-crysta…
Cage Electron-Hydroxyl Complex State as Electron Donor in Mayenite
M. Hiraishi, K. M. Kojima, M. Miyazaki +6
It is inferred from the chemical shift of muon spin rotation (SR) spectra that muons implanted in pristine (fully oxidized) mayenite, [CaAlO[$\square_…
Coexistence of Supercondcutivity and Magnetism in LaFeAs(O0.94F0.06) Probed by Muon Spin Relaxation
S. Takeshita, R. Kadono, M. Hiraishi +4
Recent discovery of oxypnictide superconductor LaFeAs(O,F) (LFAO-F) with the critical temperature (Tc) of 26 K and succeeding revelation of much increased Tc upon substitution of L…