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- Title
Spin-polarized transport through two quantum dots Interference and Coulomb correlation effects.
- Authors
TROCHA, P.; BARNAŚ, J.
- Abstract
Electronic transport through two single-level quantum dots attached in parallel to ferromagnetic leads has been analyzed theoretically. The intra-dot Coulomb correlation was taken into account, while the inter-dot hopping and Coulomb repulsion have been neglected. The dots, however, may interact via the external leads when the off-diagonal elements of the coupling matrix do not vanish. Conductance and tunnel magnetoresistance associated with the magnetization rotation from antiparallel to parallel configurations are calculated by the non-equilibrium Green function technique. The relevant Green functions are derived from the appropriate equation of motion in the Hartree-Fock approximation. We focus on the interference effects due to nonzero off-diagonal elements of the coupling matrix.
- Subjects
QUANTUM dots; ELECTRIC interference; COULOMB potential; FERROMAGNETISM; MAGNETORESISTANCE
- Publication
Materials Science (0137-1339), 2008, Vol 26, Issue 3, p707
- ISSN
0137-1339
- Publication type
Article