Monday, April 22, 2013

1304.5355 (L. Rettig et al.)

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

No comments:

Post a Comment