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

(color online) The preliminary measurement for K2Cr3As3 polycrystals, giving an initial slope of −7.43 T/K. The Pauli limit is marked with the horizontal line in the inset (adapted from Ref. [10]).