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Lanthanide substitution effects in electron-doped high-Tc superconductors studied by angle-resolved photoemission spectroscopy
M. Ikeda, T. Yoshida, A. Fujimori +5
We have performed an angle-resolved photoemission study of the electron-doped high-Tc superconductors (HTSCs) Sm_{1.85}Ce_{0.15}CuO_{4} (SCCO) and Eu_{1.85}Ce_{0.15}CuO_{4} (ECCO).…
Half-magnetization plateaux in Cr spinels
Nic Shannon, Hiroaki Ueda, Yukitoshi Motome +3
Magnetization plateaux, visible as anomalies in magnetic susceptibility at low temperatures, are one of the hallmarks of frustrated magnetism. An extremely robust half-magnetizatio…
Low temperature metallic state induced by electrostatic carrier doping of SrTiO
H. Nakamura, I. H. Inoue, Y. Takahashi +3
Transport properties of SrTiO-channel field-effect transistors with parylene organic gate insulator have been investigated. By applying gate voltage, the sheet resistance falls…
Fulde-Ferrell-Larkin-Ovchinnikov state in a perpendicular field of quasi two-dimensional CeCoIn5
K. Kumagai, M. Saitoh, T. Oyaizu +5
A Fulde-Ferrell-Larkin-Ovchinnkov (FFLO) state was previously reported in the quasi-2D heavy fermion CeCoIn5 when a magnetic field was applied parallel to the ab-plane. Here, we co…
Interplay between superconductivity and ferromagnetism in epitaxial Nb(110)/Au(111)/Fe(110) trilayers
Hiroki Yamazaki, Nic Shannon, Hidenori Takagi
In order to clarify the influence of ferromagnetism on superconductivity through a normal metal layer, the superconducting properties of epitaxial Nb(110)/Au(111)/Fe(110) trilayers…
Pressure-induced enhancement of superconductivity and superconducting-superconducting transition in CaC
Andrea Gauzzi, S. Takashima, N. Takeshita +6
We measured the electrical resistivity, , of superconducting CaC at ambient and high pressure up to 16 GPa. For 8 GPa, we found a large increase of …