S. Miyasaka

activity

20082014

most cited75As NQR/NMR Studies on Oxygen-deficient Iron-based Oxypnictide Superconductors LaFeAsO_{1-y} (y=0,0.25,0.4) and NdFeAsO_{0.6}

123 citations · 307 across the 10 of their papers we have counts for

collaborators

Showing cond-mat.supr-conShow all

8 papers · 1 filter

cond-mat.supr-con2014★ 36 cited

Evolution of the Phase Diagram of LaFeP $_{1 - x}$ As $_{x}$ O $_{1 - y}$ F $_{y}$ ( $y$ = 0 -- 0.1)

K. T. Lai, A. Takemori, S. Miyasaka +3

P/As-substitution effects on the transport properties of polycrystalline LaFeP $_{1 - x}$ As $_{x}$ O $_{1 - y}$ F $_{y}$ with $x$ = 0 -- 1.0 and $y$ = 0 -- 0.1 have been studied. In the F-fr…

cond-mat.supr-con2014★ 26 cited

Enhancement of Superconducting Transition Temperature Due to Antiferromagnetic Spin Fluctuations in Iron-pnictides LaFe(As_{1-x}P_x)(O_{1-y}F_y) : 31P-NMR Studies

H. Mukuda, F. Engetsu, K. Yamamoto +6

Systematic P-NMR studies on LaFe(As_{1-x}P_x)(O_{1-y}F_y) with y=0.05 and 0.1 have revealed that the antiferromagnetic spin fluctuations (AFMSFs) at low energies are markedly enhan…

cond-mat.supr-con2013★ 14 cited

The change of electronic state and crystal structure by post-annealing in superconducting SrFe2(As0.65P0.35)2

T. Kobayashi, S. Miyasaka, S. Tajima +6

We investigated the annealing effects on the physical properties of SrFe $_{2}$ (As $_{1 - x}$ P $_{x}$ ) $_{2}$ ( $x = 0.35$ ). The superconducting transition temperature ( $T_{c}$ ) increased from 26 K…

cond-mat.supr-con2013★ 17 cited

Nodal superconductivity in isovalently substituted SrFe $_{2}$ (As $_{1 - x}$ P $_{x}$ ) $_{2}$ pnictide superconductor at the optimal doping, $x =$ 0.35

J. Murphy, C. P. Strehlow, K. Cho +7

Temperature-dependent London penetration depth, $λ (T)$ , was measured in optimally - doped, $x =$ 0.35, as-grown ( $T_{c} \approx$ 25 K, RRR= $ρ (300 K) / ρ (T_{c})$ =4.5) and annealed ($T_c \appr…

cond-mat.supr-con2012★ 7 cited

In-plane optical spectra of Y $_{1 - x}$ Ca $_{x}$ Ba $_{2}$ Cu $_{3}$ O $_{7 - δ}$ : Overdoping and disorder effect on residual conductivity

E. Uykur, K. Tanaka, T. Masui +2

We measured the temperature dependence of the in-plane polarized reflectivity spectra of twin-free Y $_{1 - x}$ Ca $_{x}$ Ba $_{2}$ Cu $_{3}$ O $_{7 - δ}$ single crystals with different Ca-conc…

cond-mat.supr-con2011★ 13 cited

Softening of the Bond-Stretching Phonon of Ba1-xKxBiO3 at the Metal to Insulator Transition

H. Khosroabadi, S. Miyasaka, J. Kobayashi +4

The dispersion of phonons in Ba1-xKxBiO3 along the (3+q, 0, 0) direction in reciprocal space was determined for x=0, 0.30, 0.37, 0.52 using high-resolution inelastic X-ray scatteri…

cond-mat.supr-con2009★ 22 cited

Systematic Study on Fluorine-doping Dependence of Superconducting and Normal State Properties in LaFePO1-xFx

S. Suzuki, S. Miyasaka, S. Tajima +2

We have investigated the fluorine-doping dependence of lattice constants, transports and specific heat for polycrystalline LaFePO1-xFx. F doping slightly and monotonically decrease…

cond-mat.supr-con2008★ 123 cited

75As NQR/NMR Studies on Oxygen-deficient Iron-based Oxypnictide Superconductors LaFeAsO_{1-y} (y=0,0.25,0.4) and NdFeAsO_{0.6}

H. Mukuda, N. Terasaki, H. Kinouchi +10

We report 75As-NQR/NMR studies on the oxygen-deficient iron(Fe)-based oxypnictide superconductors LaFeAsO_{0.6} (T_c=28 K) along with the results on LaFeAsO, LaFeAsO_{0.75}(T_c=20…

Evolution of the Phase Diagram of LaFeP1−x​Asx​O1−y​Fy​ (y = 0 -- 0.1)