Spin-polarized transport through two quantum dots: interference and Coulomb correlation effects

• Autorzy: Trocha P. , Barnaś J.
• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

quantum dot; tunnel magnetoresistance; quantum interference

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2008
• Tom: Vol. 26, No. 3
• Strony: 708--714
• Opis fizyczny: Bibliogr. 14 poz.

Twórcy

autor

Trocha P.

autor

Barnaś J.

• Department of Physics, Adam Mickiewicz University, ul. Umułtowska 85, 61-614 Poznań, Poland,

Bibliografia

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