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Superconductivity And Local-Moment Magnetism In Eu(Fe0.89co0.11) 2as2, Shuai Jiang, Hui Xing, Guofang Xuan, Zhi Ren, Cao Wang, Zhu-An Xu, Guanghan Cao
Superconductivity And Local-Moment Magnetism In Eu(Fe0.89co0.11) 2as2, Shuai Jiang, Hui Xing, Guofang Xuan, Zhi Ren, Cao Wang, Zhu-An Xu, Guanghan Cao
Faculty of Engineering - Papers (Archive)
We report the measurements of resistivity and magnetization under magnetic fields parallel and perpendicular to the basal plane, respectively, on a cobalt-doped Eu(Fe0.89Co0.11)2As2 single crystal. We observed a resistivity drop at Tc˜21K , which shifts toward lower temperatures under external fields, suggesting a superconducting transition. The upper critical fields near Tc show large anisotropy, in contrast with those of other “122” FeAs-based superconductors. Low-field magnetic susceptibility data also show evidence of superconductivity below 21 K. Instead of the expected zero resistance below Tc , however, a resistivity re-entrance appears at 17 K under zero field, coincident with the magnetic ordering …
Spin Wave Scattering And Interface Magnetism In Superconducting-Ferromagnet-Superconducting Hybrid Structures, Gustavo A. Alvarez, Xiaolin Wang, T Puzzer, Germanas Peleckis, S. X. Dou
Spin Wave Scattering And Interface Magnetism In Superconducting-Ferromagnet-Superconducting Hybrid Structures, Gustavo A. Alvarez, Xiaolin Wang, T Puzzer, Germanas Peleckis, S. X. Dou
Faculty of Engineering - Papers (Archive)
In this work we report on interlayer spin-polarized transport studies carried out on YBa2Cu3O7-δ/La2/3Sr1/3MnO3/YBa2Cu3O7-δ thin film multilayers. Anisotropic YBa2Cu3O7-δ high-temperature superconductors (YBCO) and the manganite La2/3Sr1/3MnO3 (LSMO) are layered metallic systems where the c-axis interlayer current transport occurs via sequential tunneling of charge carriers. The temperature dependence of the resistance R(T) for different applied fields shows that these heterostructures are clearly influenced by both the insulator-to-metal …