Universality and unconventional enhancement of flux-flow resistivity in Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$

Xinyi Huang, D. J. Haney, Y. P. Singh +5

Measurements of the current-voltage characteristics were performed on Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$ single crystals with doping level $0.044\le x\le 0.1$. An unconventional in…