Comparison of band structure and superconductivity in FeSe<sub>0.5</sub>Te<sub>0.5</sub> and FeS

Comparison of band structure and superconductivity in FeSe_0.5Te_0.5 and FeS

Yang Yang¹, Feng Shi-Quan¹, Xiang Yuan-Yuan², Lu Hong-Yan³, Wang Wan-Sheng^{4, †}

(color online) Left panels: The bare suceptibilities for FeSe_0.5Te_0.5 (a) and FeS (c), respectively. Right panels: The RPA spin suceptibilities for FeSe_0.5Te_0.5 (b) and FeS (d), respectively. Here, U = 0.9 eV and .