Author(s): M. Nakajima, S. Ishida, Y. Tomioka, K. Kihou, C. H. Lee, A. Iyo, T. Ito, T. Kakeshita, H. Eisaki, and S. Uchida We investigate the anisotropy in the in-plane optical spectra of detwinned Ba(Fe 1- x Co x ) 2 As 2 . The optical conductivity spectrum of BaFe 2 As 2 shows appreciable anisotropy in the magnetostructural ordered phase, whereas the dc ( ω =0) resistivity is nearly isotropic at low temperatures. Upon Co doping, th... [Phys. Rev. Lett. 109, 217003] Published Tue Nov 20, 2012
Condensed Matter: Electronic Properties, etc.