Muon Spin Rotation Measurement of the Magnetic Field Penetration Depth in Ba(Fe0.93 Co0.07)2 As2 : Evidence for Multiple Superconducting Gaps

T. J. Williams, A. A. Aczel, E. Baggio-Saitovitch +9

We have performed transverse field muon spin rotation measurements of single crystals of Ba(Fe${}_{0.93}$Co${}_{0.07}{)}_2$As${}_2$ with the applied magnetic field along the $\hat{c}$ dire…