We investigated the anisotropic electrical transport and magnetic properties of FeSe_(0.5)Te_(0.5) single crystals grown by the self-flux method.The in-plane resistivity shows a metallic-like temperature dependence,wh...We investigated the anisotropic electrical transport and magnetic properties of FeSe_(0.5)Te_(0.5) single crystals grown by the self-flux method.The in-plane resistivity shows a metallic-like temperature dependence,while the out-of-plane resistivity shows a broad hump with a maximum at around 64 K.The magnetization loops for H//c-axis and H//ab-plane are also different,for example,there is a typical second peak for H//c-axis.The in-plane critical current density is larger than the out-of-plane one.The coherence length and penetration depth were estimated by the Ginzburg-Landau theory.The anisotropic parameterγdepends on the applied magnetic field and the temperature.The coupling of superconducting FeSe(Te)layers and the flux pinning mechanism relevant to anisotropy are also discussed.展开更多
基金Project supported by the National Key Research and Development Program of China(Grant No.2016YFA0300401)the Strategic Priority Research Program of Chinese Academy of Sciences(Grant No.XDB25000000).
文摘We investigated the anisotropic electrical transport and magnetic properties of FeSe_(0.5)Te_(0.5) single crystals grown by the self-flux method.The in-plane resistivity shows a metallic-like temperature dependence,while the out-of-plane resistivity shows a broad hump with a maximum at around 64 K.The magnetization loops for H//c-axis and H//ab-plane are also different,for example,there is a typical second peak for H//c-axis.The in-plane critical current density is larger than the out-of-plane one.The coherence length and penetration depth were estimated by the Ginzburg-Landau theory.The anisotropic parameterγdepends on the applied magnetic field and the temperature.The coupling of superconducting FeSe(Te)layers and the flux pinning mechanism relevant to anisotropy are also discussed.
