Physics and Astronomy, Ames Laboratory
Journal or Book Title
Physical Review Letters
We report on the infrared studies of the interlayer charge dynamics of a prototypical pnictide superconductor Ba(Fe0.926Co0.074)2As2. We succeeded in probing the intrinsic interlayer response by performing infrared experiments on the crystals with a cleaved ac surface. Our experiments identify the coexistence of the suppression of the electronic spectral weight and the development of a coherent Drude-like response in the normal state. The formation of the interlayer condensate is clearly observed in the superconducting state and appears to be linked to coherent contribution to the normal-state conductivity.
American Physical Society
Moon, S. J.; Schafgans, A. A.; Tanatar, Makariy A.; Prozorov, Ruslan; Thaler, A.; Canfield, Paul C.; Sefat, A. S.; Mandrus, D.; and Basov, D. N., "Interlayer Coherence and Superconducting Condensate in the c-Axis Response of Optimally Doped Ba(Fe1-xCox)(2)As-2 High-T-c Superconductor Using Infrared Spectroscopy" (2013). Physics and Astronomy Publications. 631.