Unconventional London penetration depth in Ba(Fe0.93Co0.07)2As2 single crystals

R. T. Gordon, N. Ni, C. Martin +12

The London penetration depth, $\lambda (T)$, has been measured in several single crystals of Ba(Fe${}_{0.93}$Co${}_{0.07}$)${}_2$As${}_2$. Thermodynamic, electromagnetic, and structural character…