Spin-polarized tunneling through randomly transparent magnetic junctions: Reentrant magnetoresistance approaching the Julliere limit
| dc.creator | Tkachov, Grigory | |
| dc.creator | Richter, Klaus | |
| dc.date | 2008-03-24 | |
| dc.date | 2008-04-28 | |
| dc.date.accessioned | 2026-07-07T09:40:35Z | |
| dc.date.available | 2026-07-07T09:40:35Z | |
| dc.description | Electron conductance in planar magnetic tunnel junctions with long-range barrier disorder is studied within Glauber-eikonal approximation enabling exact disorder ensemble averaging by means of the Holtsmark-Markov method. This allows us to address a hitherto unexplored regime of the tunneling magnetoresistance effect characterized by the crossover from momentum-conserving to random tunneling as a function of the defect concentration. We demonstrate that such a crossover results in a reentrant magnetoresistance: It goes through a pronounced minimum before reaching disorder- and geometry-independent Julliere's value at high defect concentrations. | |
| dc.description | 7 pages, 5 figures, derivation of Eq. (39) added, errors in Ref. 7 corrected | |
| dc.identifier | https://arxiv.org/abs/0803.3427 | |
| dc.identifier | http://arxiv.org/abs/0803.3427 | |
| dc.identifier | Phys. Rev. B 77, 184427 (2008) | |
| dc.identifier | doi:10.1103/PhysRevB.77.184427 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/161532 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.subject | Disordered Systems and Neural Networks | |
| dc.title | Spin-polarized tunneling through randomly transparent magnetic junctions: Reentrant magnetoresistance approaching the Julliere limit | |
| dc.type | text |