DETERMINATION OF SUPERCONDUCTING ENERGY GAP OF HEAVILY DOPED Re THIN FILMS BY ELECTRON TUNNELING

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DETERMINATION OF SUPERCONDUCTING ENERGY GAP OF HEAVILY DOPED Re THIN FILMS BY ELECTRON TUNNELING

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WANG RUI-LAN, LI HONG-CHENG, GUAN WEI-YAN

Acta Phys. Sin., 1987, 36(12): 1643-1644.

Abstract
The superconducting energy gap of heavily doped Re thin films has been measured by electron tunneling of Re/Al2O3/Al junctions. We get △0= (1.04±0.02) meV, 2△0/KTc = 3.31±0.04. The △0 value is determined by the maximum conductance method. It is shown that the energy gap and the Tc of Re films increases many times by impurity, but Re remains a weakly coupled superconductor.
Authors and contacts
WANG RUI-LAN,

LI HONG-CHENG,

GUAN WEI-YAN

1.
中国科学院物理研究所
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