HL Zhou, YH Zhang, Y Li, SL Li,
WS Hong… - Chinese Physics …, 2022 - iopscience.iop.org
High-quality superconducting Ca 1− x Na x Fe 2 As 2 single crystals have been successfully
grown by the NaAs-flux method, with sodium doping level x= 0.4–0.64. The typical sizes of …