Superconducting Transition in Quasi-One- Dimensional Superconductor Cs2Cr3As3 Probed by DC Magnetic Susceptibility

We measured the DC magnetic susceptibility of single crystals of the quasi-one-dimensional superconductor Cs2Cr3As3. Diamagnetism appears below 1.2 and 2 K for magnetic fields parallel and perpendicular to the c-axis, respectively, whereas the Meissner effect emerges at 1.2 K in both directions, suggesting that, between 1.2 and 2 K, superconductivity is filamentary along the c-axis.