Formation of pure two-electron triplet states in weakly coupled quantum dots attached to ferromagnetic leads

Details Formation of pure two-electron triplet states in weakly coupled quantum dots attached to ferromagnetic leads Formation of pure two-electron triplet states in weakly coupled quantum dots attached to ferromagnetic leads

2006-08-25

arxiv.org/abs/cond-mat/0608565v3

Nanotechnology, vol. 17, 5344 (2006)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, 2 figures, 1 table, minor changes to appear as published

Scientific paper

10.1088/0957-4484/17/21/010

Weakly coupled quantum dots in the Pauli spin blockade regime are considered with respect to spin-dependent transport. By attaching one half-metallic and one non-magnetic lead, the Pauli spin blockade if formed by a pure triplet state with spin moment $S_z=1$ or -1. Furthermore, additional spin blockade regimes emerge because of full occupation in states with opposite spin to that of the half-metallic lead.

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