https://doi.org/10.1051/epjconf/20134103009
Ultrafast quasiparticle dynamics of FeTe0.75Se0.25 superconductor
1 Materials and Structures Laboratory,Tokyo Institute of Technology, R3-10, 4259 Nagatsuta, Yokohama 226-58503, Japan
2 CREST, Japan Science and Technolgy Agency, Kawaguchi 332-0012, Japan
3 Facalty of Engeneering, Yokohama National University, Yokohama 240-8501, Japan
4 National Defense Academy of Japan, Yokosuka 239-8686, Japan
The electron-phonon coupling constant (λ≈0.45) obtained from femtosecond pump-probe reflection measurements suggests that a phonon-mediated process cannot be the dominant mechanism for superconductivity of FeTe0.75Se0.25.
© Owned by the authors, published by EDP Sciences, 2013
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.