Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2008-03-24
Phys. Rev. B 77, 184427 (2008)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
7 pages, 5 figures, derivation of Eq. (39) added, errors in Ref. 7 corrected
Scientific paper
10.1103/PhysRevB.77.184427
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.
Richter Klaus
Tkachov Grigory
No associations
LandOfFree
Spin-polarized tunneling through randomly transparent magnetic junctions: Reentrant magnetoresistance approaching the Julliere limit does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Spin-polarized tunneling through randomly transparent magnetic junctions: Reentrant magnetoresistance approaching the Julliere limit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spin-polarized tunneling through randomly transparent magnetic junctions: Reentrant magnetoresistance approaching the Julliere limit will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-616650