Superconducting spin filter
| dc.creator | Chtchelkatchev, N. M. | |
| dc.date | 2003-06-22 | |
| dc.date | 2003-10-09 | |
| dc.date.accessioned | 2026-07-07T02:51:58Z | |
| dc.date.available | 2026-07-07T02:51:58Z | |
| dc.description | Consider two normal leads coupled to a superconductor; the first lead is biased while the second one and the superconductor are grounded. In general, a finite current $I_2(V_1,0)$ is induced in the grounded lead 2; its magnitude depends on the competition between processes of Andreev and normal quasiparticle transmission from the lead 1 to the lead 2. It is known that in the tunneling limit, when normal leads are weakly coupled to the superconductor, $I_2(V_1,0)=0$, if $|V_1|<Δ$ and the system is in the clean limit. In other words, Andreev and normal tunneling processes compensate each-other. We consider the general case: the voltages are below the gap, the system is either dirty or clean. It is shown that $I_2(V_1,0)=0$ for general configuration of the normal leads; if the first lead injects spin polarized current then $I_2=0$, but spin current in the lead-2 is finite. XISIN structure, where X is a source of the spin polarized current could be applied as a filter separating spin current from charge current. We do an analytical progress calculating $I_1(V_1,V_2), I_2(V_1,V_2)$. | |
| dc.description | 5 pages, references added | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0306552 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0306552 | |
| dc.identifier | JETP Lett. v. 78, 230 (2003). [Pis'ma v Zh. Eksp. i Teor. Fiz. v. 78, 265 (2003).] | |
| dc.identifier | doi:10.1134/1.1622037 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/21671 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.subject | Superconductivity | |
| dc.title | Superconducting spin filter | |
| dc.type | text |