Structural Instability and Magnetism of Superconducting KCr${}_3$As${}_3$

Guangzong Xing, Ling Shang, Yuhao Fu +4

We find a lattice instability in the superconductor KCr${}_3$As${}_3$, corresponding to a distortion of the Cr metallic wires in the crystal structure. This distortion couples strongly…