%0 Journal Article
%T Strain effects on electronic structure of the iron selenide superconductor
%A M. J. Winiarski
%A M. Samsel-Czeka£¿ a
%A A. Ciechan
%J Physics
%D 2013
%I arXiv
%R 10.1209/0295-5075/100/47005
%X The influence of various strains on crystal and electronic structures of superconducting FeSe has been studied ab initio. We consider changes in the Fermi surface nesting with a vector Q=(0.5,0.5)*(2\pi /a) as crucial for rising superconductivity (SC) mediated by spin-fluctuations (SF). Our results indicate that the c-axis strained FeSe exhibits the most imperfect nesting, which enhances SF and, hence, also SC. In turn, the ab-plane compressive strain slightly weakens this} nesting while the tensile strain destroys it completely. These findings are consistent with reported earlier experimental dependencies of superconducting transition temperatures on strain in FeSe thin films.
%U http://arxiv.org/abs/1308.2933v1