Mesoscopic Tunneling Magnetoresistance
arXiv:cond-mat/0006429 · doi:10.1103/PhysRevB.63.184418
Abstract
We study spin-dependent transport through ferromagnet/normal-metal/ferromagnet double tunnel junctions in the mesoscopic Coulomb blockade regime. A general transport equation allows us to calculate the conductance in the absence or presence of spin-orbit interaction and for arbitrary orientation of the lead magnetizations. The tunneling magnetoresistance (TMR), defined at the Coulomb blockade conductance peaks, is calculated and its probability distribution presented. We show that mesoscopic fluctuations can lead to the optimal value of the TMR.
5 pages, 3 eps figures included using epsf.sty. Revised text and improved notation, fig. 2 removed, explicit equations for the GSE case added
References in corpus (7)
- Finite-element theory of transport in ferromagnet-normal metal systems
- Quantum Dot as Spin Filter and Spin Memory
- Tunneling Via Individual Electronic States in Ferromagnetic Nanoparticles
- Interactions and Interference in Quantum Dots: Kinks in Coulomb Blockade Peak Positions
- Mesoscopic fluctuations of the ground state spin of a small metal particle
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- Spin-Dependent Transport Through An Interacting Quantum Dot
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- Rate equations for Coulomb blockade with ferromagnetic leads
- Interference effects in resonant magneto-transport
- Charge and spin pumping through a double quantum dot
- Current and Spin-Torque in Double Tunnel Barrier Ferromagnet - Superconductor - Ferromagnet Systems
- Phase shift experiments identifying Kramers doublets in a chaotic superconducting microwave billiard of threefold symmetry
- Angular Conductance Resonances of Quantum Dots Non-Collinearly Coupled to Ferromagnetic Leads
- Spin resonance without spin splitting
- Landau Fermi Liquid Picture of Spin Density Functional Theory: Strutinsky Approach to Quantum Dots
- Spin-Polarized Transport in Ferromagnet-Marginal Fermi Liquid Systems
- Canted Magnetization Texture in Ferromagnetic Tunnel Junctions