Lambert, Colin (1993) Quantum interference from superconducting islands in a mesoscopic solid. Journal of Physics Condensed Matter, 5 (6). pp. 707-716. ISSN 0953-8984
Full text not available from this repository.Abstract
By computing Andreev scattering coefficients for a three-dimensional disordered solid containing superconducting inclusions and evaluating a generalized Landauer-Buttiker formula for the two-probe electrical conductance G, an intuitive result is obtained for the dependence of G on the phase of the superconductors. For the simplest case of two inclusions, it is shown that G varies periodically with the phase difference phi of the superconducting islands, with period 2pi. For more than two inclusions, beating can occur. It the superconductors are decoupled, G varies periodically with time, at the Josephson frequency. If the superconductors are weakly coupled, this behaviour is preceded by a time-independent regime in which phi increases with the externally applied voltage, while G changes non-monotonically. It is demonstrated that at least in the presence of single-channel external leads, the ensemble averaged conductance of a highly disordered system varies periodically with period 2pi, in contrast with a periodicity of pi found for weakly localized systems.
| Item Type: | Article |
|---|---|
| Journal or Publication Title: | Journal of Physics Condensed Matter |
| Subjects: | Q Science > QC Physics |
| Departments: | Faculty of Science and Technology > Physics |
| ID Code: | 58058 |
| Deposited By: | ep_importer_pure |
| Deposited On: | 22 Oct 2012 11:20 |
| Refereed?: | Yes |
| Published?: | Published |
| Last Modified: | 22 Oct 2012 11:20 |
| Identification Number: | |
| URI: | http://eprints.lancs.ac.uk/id/eprint/58058 |
Actions (login required)
| View Item |
