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Spin pump effects on the spin current through two coupled quantum dots

✍ Scribed by H. Pan; S.-Q. Duan; L.-N. Zhao; W.-D. Chu; W. Zhang

Book ID
111622552
Publisher
Springer
Year
2008
Tongue
English
Weight
350 KB
Volume
62
Category
Article
ISSN
1434-6036

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Spin-polarized resonant tunneling throug
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## Abstract Resonant electronic transport through two coupled non‐interacting single‐level quantum dots attached to ferromagnetic leads with collinear magnetizations is analyzed theoretically. Coupling of the dots to external leads as well as the inter‐dot coupling are assumed to be spin dependent.

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The electronic states of a pair of vertically coupled quantum dots are calculated using spin density functional theory, where the tunneling between the dots is included. For small and large interdot distances Hund's rule determines the ground state, while for intermediate distances new phases are pr