Evidence for nodal superconductivity in quasi-one-dimensional K${}_2$Cr${}_3$As${}_3$

G. M. Pang, M. Smidman, W. B. Jiang +7

The recent discovery of superconductivity in the quasi-one-dimensional compound K${}_2$Cr${}_3$As${}_3$, which consists of double-walled tubes of [(Cr${}_3$As${}_3$)${}^{2-}{]}^{\infty }$ that run…