Pressure effects on iron-based superconductor CaFe0.88Co0.12AsF. (29th May 2019)

• Record Type: Journal Article
• Authors: Huang, J; Zhang, C; Ma, Y H; Wang, T; Mu, G; Yu, L; Hu, T; Xiao, H
• Is Part Of: Journal of physics. Volume 31:Number 32(2019)
• Publication Date: 2019-05-29
• Subjects: superconductivity -- pressure -- phase diagram; Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/1361-648X/ab1ef6
• Languages: English
• ISSNs: 0953-8984

Abstract

Abstract: Systematic measurements of electrical resistivity and Hall coefficient under high pressure were performed on CaFe0.88 Co0.12 AsF single crystal samples. The superconductivity is suppressed quickly by pressure and can not be detected down to 2 K at above 12.7 GPa, while the magnitude of the Hall coefficient shows a very weak pressure and temperature dependence. A comprehensive analysis considering the pressure dependence of, , residual resistivity ratio, and the Fermi-liquid term of the resistivity indicates that the electron correlation is an important factor in superconductivity of iron-based superconductors.