Current-phase relation of a superconducting quantum point contact
β Scribed by Hisao Miyazaki; Akinobu Kanda; Youiti Ootuka
- Publisher
- Elsevier Science
- Year
- 2006
- Tongue
- English
- Weight
- 185 KB
- Volume
- 437-438
- Category
- Article
- ISSN
- 0921-4534
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π SIMILAR VOLUMES
The dc Josephson effect in a superconducting quantum point contact, where supercurrent flows through a small number of channels, is reviewed. The central role of Andreev levels is emphasized which carry the whole supercurrent in short symmetric Josephson junctions including tunnel junctions. A simpl
We discuss the general transport properties of superconducting quantum point contacts. We show how these properties can be obtained from a microscopic model using nonequilibrium Green's function techniques. For the case of a one-channel contact we analyze the response under different biasing conditi
A microscopic theory for transport properties of a superconducting quantum point contact is presented. According to contact transmission and quasiparticle damping two different physical regimes can be identified. In the limit of small applied voltages and weak damping this theory provides an exact a