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arXiv · 1304.5355

Electron-phonon coupling in 122 Fe pnictides analyzed by femtosecond time-resolved photoemission

L. Rettig·R. Cortés·H. S. Jeevan·P. Gegenwart·T. Wolf·J. Fink·U. Bovensiepen
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Abstract

Based on results from femtosecond time-resolved photoemission, we compare three different methods for determination of the electron-phonon coupling constant λ in Eu and Ba-based 122 FeAs compounds. We find good agreement between all three methods, which reveal a small λ < 0.2. This makes simple electron-phonon mediated superconductivity unlikely in these compounds.

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L. Rettig, R. Cortés, H. S. Jeevan, P. Gegenwart, T. Wolf, J. Fink, U. Bovensiepen. 2013-04-19. Electron-phonon coupling in 122 Fe pnictides analyzed by femtosecond time-resolved photoemission. https://doi.org/10.1088/1367-2630%2F15%2F8%2F083023

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