Anisotropic Critical Current Densities in Ba0.6K0.4Fe2As2 with Splayed Columnar Defects. Issue 1 (July 2021)

• Record Type: Journal Article
• Authors: Wang, Jiachen; Takahashi, Ayumu; Pyon, Sunseng; Yoshida, Atsushi; Kambara, Tadashi; Sun, Yue; Kitano, Haruhisa; Tamegai, Tsuyoshi
• Is Part Of: Journal of physics. Volume 1975:Issue 1(2021)
• Publication Date: 2021-07
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1975/1/012012
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: Enhancement and non-monotonic field dependence of critical current density ( Jc ), called anomalous peak effect, were observed in Ba1− x K x Fe2 As2 with splayed columnar defects. In principle, anisotropy of in-plane Jc should be present in this superconductor since the introduced splayed columnar defects introduce anisotropy in the plane. This study reports in-plane anisotropy of Jc observed in 2.6 GeV U irradiated Ba0.6 K0.4 Fe2 As2 with splay angles of ±15° and ±20°. Results show that Jc component parallel to the splay plane is larger than the perpendicular component, and the parallel component contribute to the anomalous peak effect at around B Φ /3 more.