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arXiv · 1112.4636

Observation of Multiple Superconducting Gaps in the Infrared Reflectivity Spectra of Ba(Fe0.9Co0.1)2As2

Yu. A. Aleshchenko·A. V. Muratov·V. M. Pudalov·E. S. Zhukova·B. P. Gorshunov·F. Kurth·K. lida
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Abstract

The results of infrared reflectivity measurements for the iron-based high-temperature superconductor Ba(Fe0.9Co0.1)2As2 are reported. The reflectivity is found to be close to unity at frequencies w lower than 2Delta/h (2Delta is the superconducting gap and h is Planck's constant). This is evidence for the s+/- or s+/+ symmetry of the superconducting order parameter in the studied compound. The infrared reflectivity spectra of Ba(Fe0.9Co0.1)2As2 manifest opening of several superconducting gaps at temperatures lower than critical Tc.

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Yu. A. Aleshchenko, A. V. Muratov, V. M. Pudalov, E. S. Zhukova, B. P. Gorshunov, F. Kurth, K. lida. 2011-12-20. Observation of Multiple Superconducting Gaps in the Infrared Reflectivity Spectra of Ba(Fe0.9Co0.1)2As2. https://doi.org/10.1134/s0021364011210028

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