Scaling of the single-electron tunnelling current through ultrasmall tunnel junctions
| Autor: | Hiroshi Mizuta, Shuhei Amakawa, Kazuhito Tsukagoshi, Minoru Fujishima, Koichiro Hoh |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
Josephson effect
Condensed matter physics Chemistry Electron Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Tunnel effect Tunnel junction Condensed Matter::Superconductivity Rectangular potential barrier General Materials Science Electric current Scaling Quantum tunnelling |
| Zdroj: | Journal of Physics: Condensed Matter. 12:7223-7228 |
| ISSN: | 1361-648X 0953-8984 |
| DOI: | 10.1088/0953-8984/12/32/306 |
| Popis: | The effect of a tunnelling electron on the tunnel barrier shape is studied at the limit where a static image charge model is applicable. It is shown that the single-electron tunnelling current through an ultrasmall voltage-biased junction is not proportional to the junction area because of charging at the electrodes. Simple expressions are presented for the effective static barrier shape of a voltage-biased junction and of a junction in a circuit, the former of which accounts for the anomalous current scaling. A possible experimental arrangement for verifying the scaling relationship is suggested, with numerical results. |
| Databáze: | OpenAIRE |
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