Self-consistent microscopic calculations for non-local transport through nanoscale superconductors
| dc.creator | Mélin, R. | |
| dc.creator | Bergeret, F. S. | |
| dc.creator | Yeyati, A. Levy | |
| dc.date | 2008-11-24 | |
| dc.date | 2009-03-02 | |
| dc.date.accessioned | 2026-07-07T12:59:25Z | |
| dc.date.available | 2026-07-07T12:59:25Z | |
| dc.description | We implement self-consistent microscopic calculations in order to describe out-of-equilibrium non-local transport in normal metal-superconductor-normal metal hybrid structures in the presence of a magnetic field and for arbitrary interface transparencies. A four terminal setup simulating usual experimental situations is described by means of a tight-binding model. We present results for the self-consistent order parameter and current profiles within the sample. These profiles illustrate a crossover from a quasi-equilibrium to a strong non-equilibrium situation when increasing the interface transparencies and the applied voltages. We analyze in detail the behavior of the non-local conductance in these two different regimes. While in quasi-equilibrium conditions this can be expressed as the difference between elastic cotunneling and crossed Andreev transmission coefficients, in a general situation additional contributions due to the voltage dependence of the self-consistent order parameter have to be taken into account. The present results provide a first step towards a self-consistent theory of non-local transport including non-equilibrium effects and describe qualitatively a recent experiment [Phys. Rev. Lett. 97, 237003 (2006)]. | |
| dc.description | 12 pages, 14 figures, 2 figures corrected | |
| dc.identifier | https://arxiv.org/abs/0811.3874 | |
| dc.identifier | http://arxiv.org/abs/0811.3874 | |
| dc.identifier | Phys. Rev. B 79, 104518 (2009) | |
| dc.identifier | doi:10.1103/PhysRevB.79.104518 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/225564 | |
| dc.subject | Superconductivity | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.title | Self-consistent microscopic calculations for non-local transport through nanoscale superconductors | |
| dc.type | text |