Crossover between Anomalous Peak Effects Induced by Splayed and Tilted Columnar Defects in Ba${}_{0.6}$K${}_{0.4}$Fe${}_2$As${}_2$

Kanta Kato, Ryosuke Sakagami, Satoru Okayasu +2

We investigated the magnetic field dependence of the critical current density (Jc) in Ba0.6K0.4Fe2As2 with various configurations of columnar defects (CDs) introduced by 2.6 GeV U…