Pressure evolution of low-temperature crystal structure and bonding of 37 K $T_c$ FeSe superconductor

S. Margadonna, Y. Takabayashi, Y. Ohishi +6

FeSe with the PbO structure is a key member of the family of new high-$T_c$ iron pnictide and chalcogenide superconductors, as while it possesses the basic layered structural motif…