Single-channel transmission in gold one-atom contacts and chains

Article

关键词: CONDUCTING CHANNELS;    DENSITY;    STATES;   

DOI  :  10.1103/PhysRevB.67.121407

来源: SCIE

【 摘 要 】

We induce superconductivity by proximity effect in thin layers of gold and study the number of conduction channels which contribute to the current in one-atom contacts and atomic wires. The atomic contacts and wires are fabricated with a scanning tunneling microscope. The set of transmission probabilities of the conduction channels is obtained from the analysis of the I(V) characteristic curve which is highly nonlinear due to multiple Andreev reflections. In agreement with theoretical calculations, we find that there is only one channel that is almost completely open.

【 授权许可】

Free