Critical current and vortex dynamics in single crystals of Ca(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$

A. K. Pramanik, L. Harnagea, S. Singh +6

We investigate the critical current density and vortex dynamics in single crystals of Ca(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$ ($x$ = 0.051, 0.056, 0.065, and 0.073). The samples exhibit d…