SUPERCONDUCTING TUNNELING ON CHEVREL PHASE THIN-FILMS

Electron tunneling spectroscopy has been applied to the investigation of Cu//1//. //8Mo//6S//8, PbMo//6//. //3//5S//8 and LaMo//6S//8 dc getter-sputtered thin films. Cryogenically deposited Al//2O//3 as the artificial barrier with Al counter-electrode formed the tunnel junctions. The energy gap DELTA //0 and the ratio 2 DELTA //0/k//BT//c were determined from the differential conductance dJ/dV vs. voltage V. Preliminary measurements showed phonon structure in LaMo//6S//8 films.