Gold contacts to YBa2Cu3O7 crystals with specific contact resistivity under 10-10 ωcm2 are described. A gap structure of 10 mV is seen in the Andreev reflection signal. We discuss the possibility of superconductivity induced in Au by the proximity effect.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering