Pramanik, A. K.; HARNAGEA, LUMINITA; SINGH, S.; Aswartham, S.; Behr, G.; Wurmehl, S.; Hess, C.; Klingeler, R.; Chner, B.
(American Physical Society, 2010-07)
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 different critical temperatures and superconducting ...