Anisotropy Reversal of the Upper Critical Field at Low Temperatures and Spin-Locked Superconductivity in K2Cr3As3

F. F. Balakirev, T. Kong, M. Jaime +5

We report the first measurements of the anisotropic upper critical field $H_{c2}(T)$ for K${}_2$Cr${}_3$As${}_3$ single crystals up to 60 T and $T>0.6$ K. Our results show that t…