Superconductivity with peculiar upper critical fields in quasi-one-dimensional Cr-based pnictides
Cao Guang-Han1, †, Zhu Zeng-Wei2
       

(color online) Polar angle (θ) dependent at fixed temperatures in K2Cr3As3. The solid lines are the fitted result using Eq. (2) (see text for details), and the dashed pink curve (for 5-K data only) is the fitted result with Eq. (1) (adapted from Ref. [53]).