Spin-dependent transport through quantum-dot Aharonov-Bohm interferometers

Details Spin-dependent transport through quantum-dot Aharonov-Bohm interferometers Spin-dependent transport through quantum-dot Aharonov-Bohm interferometers

2010-07-28

arxiv.org/abs/1007.4988v2

Phys. Rev. B 82, 165452 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

9 pages, 4 figures

Scientific paper

10.1103/PhysRevB.82.165452

We study the influence of spin polarization on the degree of coherence of electron transport through interacting quantum dots. To this end, we identify transport regimes in which the degree of coherence can be related to the visibility of the Aharonov-Bohm oscillations in the current through a quantum-dot Aharonov-Bohm interferometer with one normal and one ferromagnetic lead. For these regimes, we calculate the visibility and, thus, the degree of coherence, as a function of the degree of spin polarization of the ferromagnetic lead.

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