Anomalous superconducting phase diagram in UBe13

International Conference on Strongly Correlated Electron Systems 2014

Matsuno, H.^1 ; Morita, K.^1 ; Kotegawa, H.^1 ; Tou, H.^1 ; Haga, Y.^2 ; Yamamoto, E.^2 ; Onuki, Y.^3

Department of Physics, Kobe University, Kobe

657-8501, Japan^1

Advanced Science Research Center, Japan Atomic Energy Agency, Tokai

319-1195, Japan^2

Department of Physics, University of Ryukyus, Nishihara, Okinawa

903-0213, Japan^3

关键词: Field dependence;    Superconducting phase diagrams;    Surface impedance measurement;    Surface reactance;    Vortex pinning;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/592/1/012067/pdf
DOI  :  10.1088/1742-6596/592/1/012067

来源: IOP

【 摘 要 】

Surface impedance measurements Zs, where Zsconsists of surface resistance Rsand surface reactance Xs, were carried out for a single crystal UBe13. Rsexhibits unusual field dependence with a significant hump around the H∗, which is nearly equal to 0.6Hc2. This behavior indicates that the strong vortex pinning occurs around H∗.