Possible mixed coupling mechanism in FeTe(1-x)Se(x) within a multiband Eliashberg approach.
J Phys Condens Matter
; 27(43): 435701, 2015 Nov 04.
Article
en En
| MEDLINE
| ID: mdl-26445023
ABSTRACT
We show that the phenomenology of the iron chalcogenide superconductor FeTe(1-x)Se(x) can be explained within an effective three-band s±-wave Eliashberg model. In particular, various experimental data reported in literature-the critical temperature, the energy gaps, the upper critical field, the superfluid density-can be reproduced by this model in a moderate strong-coupling regime provided that both an intraband phononic term and an interband antiferromagnetic spin-fluctuations term are included in the coupling matrix. The intraband coupling is unusual in Fe-based compounds and is required to explain the somehow anomalous association between gap amplitudes and Fermi surfaces, already evidenced by ARPES.
Texto completo:
1
Banco de datos:
MEDLINE
Tipo de estudio:
Qualitative_research
Idioma:
En
Año:
2015
Tipo del documento:
Article