Superconductivity At The Normal Metal/Dirac Semimetal Cd(3)As(2)Interface
CHINESE PHYSICS LETTERS(2020)
摘要
We investigate the interface between a three-dimensional Dirac semimetal Cd(3)As(2)and a normal metal via soft-point contact spectroscopy measurement. The superconducting gap features were detected below 3.8 K and 7.1 K in the case of Cd(3)As(2)single crystals sputter-coated with the Pt and Au films, respectively, in the differential conductancedI/dV-Vplots of the point contacts. As the applied magnetic field increased, the drop in the zero-bias contact resistance shifted toward lower temperatures. The topologically non-trivial band structure of Cd(3)As(2)is considered to play a crucial role in inducing the superconductivity. Apart from realizing superconductivity in topological materials, our creative approach can be used to investigate possible topological superconductivity and exhibits a high application potential in electronic devices.
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关键词
74, 78, -w, 74, 70, -b, 74, 25, Sv
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