2012/11/01 by M. Winiarski, M. J. Winiarski, M. Samsel–Czekała +2
Business, Management and Accounting · Chemistry · Materials Science · Physics and Astronomy · #Ab initio #Chemistry #Condensed matter physics #Corporate Taxation and Avoidance #Electronic structure #Fermi surface #Iron-based superconductor #Iron-based superconductors research #Materials science #Metallurgy #Physics #Selenide #Strain (injury) #Superconductivity #cond-mat.supr-con
paper · pdf · doi:10.1209/0295-5075/100/47005
published as EPL, 100 (2012) 47005
openalex publication_date 2012/11/01 · arxiv created 2013/08/13 · arxiv updated 2016/03/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The influence of various strains on the 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 π / 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 earlier reported experimental dependences of the superconducting transition temperatures on strain in FeSe thin films.