Normal state bottleneck and nematic fluctuations from femtosecond quasiparticle relaxation dynamics in Sm(Fe,Co)AsO
Mertelj, T.; Stojchevska, L.; Zhigadlo, N. D.; Karpinski, J.; Mihailovic, D.
2013

Abstract

We investigate temperature and fluence dependent dynamics of the photoexcited quasiparticle relaxation and low-energy electronic structure in electron-doped 1111-structure Sm(Fe0.93Co0.07)AsO single crystal. We find that the behavior is qualitatively identical to the 122-structure Ba(Fe,Co)(2)As-2 including the presence of a normal state pseudogap and a marked twofold symmetry breaking in the tetragonal phase that we relate to the electronic nematicity. The twofold symmetry breaking appears to be a general feature of the electron-doped iron pnictides.

Details

Title Normal state bottleneck and nematic fluctuations from femtosecond quasiparticle relaxation dynamics in Sm(Fe,Co)AsO
Author(s) Mertelj, T. ; Stojchevska, L. ; Zhigadlo, N. D. ; Karpinski, J. ; Mihailovic, D.
Published in Physical Review B
Pagination 6
Volume 87
Issue 17
Pages 174525
Date 2013
Publisher College Pk, Amer Physical Soc
ISSN 1098-0121
DOI https://doi.org/10.1103/PhysRevB.87.174525
Other identifier(s) View record in Web of Science
Laboratories LPMC
Record Appears in Scientific production and competences > SB - School of Basic Sciences > SB Archives > LPMC - Laboratory of Nanostructures and Novel Electronic Materials
Peer-reviewed publications
Work produced at EPFL
Journal Articles
Published
Record creation date 2013-10-01

Actions