Superconductivity in alkali-doped fullerides with wood's metal and heterofullerides with two different alkali metals A((1))A((2))MC(60)

摘要

Here we report our experimental data on the synthesis and investigation of superconductivity in fullerides and heterofullerides synthesized by different methods and also doped by alloys with low melting temperature T-m: Wood's metal (W - Sn,Pb,Bi,Cd; T-m = 65 degrees C), alloy Y (Y - Bi,Sn.Pb,In,Cd,Tl; T-m = 41.5 degrees C) and Tl doped heterofullerides with two different alkali metals - ACsTlC(60) (A = K, Rb). We found superconductivity in heterofullerides K2W1C60 (T-c = 16 K), Rb2W1C60 (T-c = 8 K) and K2Y1C60 (T-c = 8 K). Also synthesized heterofullerides with Cesium KCsTlC60 (T-c = 21.7 K) and RbCsTlC60 (T-c = 26.4 K) are superconductors.