Evidence for triplet superconductivity in Josephson junctions with ferromagnetic Cu${}_2$MnAl-Heusler barriers

D. Sprungmann, K. Westerholt, H. Zabel +2

We have studied Josephson junctions with barriers prepared from the Heusler compound Cu${}_2$MnAl. In the as-prepared state the Cu${}_2$MnAl layers are non ferromagnetic and the critic…