Superconductivity‐enhanced nematicity and “<i>s</i>+<i>d</i>” gap symmetry in Fe(Se<sub><i>1−x</i></sub>S<sub><i>x</i></sub>)
Superconductivity‐enhanced nematicity and “<i>s</i>+<i>d</i>” gap symmetry in Fe(Se<sub><i>1−x</i></sub>S<sub><i>x</i></sub>)
Abstract Superconducting iron chalcogenide FeSe has the simplest crystal structure among all the Fe‐based superconductors. Unlike other iron pnictides, FeSe exhibits no long‐range magnetic order accompanying the tetragonal‐to‐orthorhombic structural distortion, which raises the fundamental question about the role of magnetism and its associated spin fluctuations in mediating both nematicity and …