131 citations · 553 across the 12 of their papers we have counts for
11 papers · 1 filter
Point-contact Andreev-reflection spectroscopy in Fe(Te,Se) films: multiband superconductivity and electron-boson coupling
D. Daghero, P. Pecchio, G. A. Ummarino +6
We report on a study of the superconducting order parameter in Fe(TeSe) thin films (with different Se contents: x=0.3, 0.4, 0.5) by means of point-contact Andreev-ref…
Microscopic analysis of the chemical reaction between Fe(Te,Se) thin films and underlying CaF
A. Ichinose, I. Tsukada, M. Hanawa +5
To understand the chemical reaction at the interface of materials, we performed a transmission electron microscopy (TEM) observation in four types of Fe(Te,Se) superconducting thin…
Hall effect of FeTe and Fe(Se_1-x_Te_x_) thin films
I. Tsukada, M. Hanawa, Seiki komiya +4
The Hall effect is investigated in thin-film samples of iron-chalcogenide superconductors in detail. The Hall coefficient (RH) of FeTe and Fe(Se1-xTex) exhibits a similar positive…
Hall effect in superconducting Fe(Se0.5Te0.5) thin films
I. Tsukada, M. Hanawa, S. Komiya +4
The Hall effect is investigated for eight superconducting Fe(Se_0.5_Te_0.5_) thin films grown on MgO and LaSrAlO_4_ substrates with different transition temperatures (T_c_). The no…
Deviation from the Wiedemann-Franz law induced by nonmagnetic impurities in overdoped La_{2-x}Sr_{x}CuO_{4}
X. F. Sun, B. Lin, X. Zhao +4
To investigate the validity of the Wiedemann-Franz (WF) law in disordered but metallic cuprates, the low-temperature charge and heat transport properties are carefully studied for…
Angle-Resolved Photoemission Spectroscopy of Iron-Chalcogenide Superconductor Fe1.03Te0.7Se0.3 : Strong-Coupling Superconductivity and Universality of Inter-Band Scattering
K. Nakayama, T. Sato, P. Richard +8
We have performed high-resolution angle-resolved photoemission spectroscopy of iron-chalcogenide superconductor Fe1.03Te0.7Se0.3 (Tc = 13 K) to investigate the electronic structure…
Critical charge dynamics of superconducting LSCO thin films probed by complex microwave spectroscopy: Anomalous changes of the universality class by hole doping
T. Ohashi, H. Kitano, I. Tsukada +1
We study the critical charge dynamics of the superconducting to the normal-state transition for LSCO thin films with a wide range of the Sr concentration, by measuring the frequenc…
Negative Hall coefficients of heavily overdoped La2-xSrxCuO4
I. Tsukada, S. Ono
The Hall coefficient (R_H) is investigated along the in-plane direction for carefully prepared La_2-x_Sr_x_CuO_4_ thin films from x=0.08 to x=0.40. It is found that R_H becomes alm…
Large magneto-thermal effect and the spin-phonon coupling in a parent insulating cuprate Pr_{1.3}La_{0.7}CuO_4
X. F. Sun, I. Tsukada, T. Suzuki +2
The magnetic-field (H) dependence of the thermal conductivity κof Pr_{1.3}La_{0.7}CuO_4 is found to show a pronounced minimum for in-plane fields at low temperature, which is best…
Structural phase control of (LaNdSr)CuO thin films by epitaxial growth technique
I. Tsukada
Epitaxial growth of (LaNdSr)CuO thin films was studied by pulsed-laser deposition technique on three different substrates, SrTiO (100), LaSrAlO$_…
Unusual magnetic susceptibility anisotropy in untwinned La_{2-x}Sr_xCuO_4 single crystals in the lightly-doped region
A. N. Lavrov, Yoichi Ando, Seiki Komiya +1
We present a study of the magnetic susceptibility in carefully detwinned La_{2-x}Sr_{x}CuO_4 single crystals in the lightly-doped region (x=0-0.03), which demonstrates a remarkable…