Large Magnetoresistance Induced by Quantum Charge Fluctuations in Magnetic Double Dots

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dc.creatorSheng, L.
dc.creatorXing, D. Y.
dc.creatorSheng, D. N.
dc.date2004-08-26
dc.date.accessioned2026-07-07T02:59:56Z
dc.date.available2026-07-07T02:59:56Z
dc.descriptionWe study electron tunneling through two small ferromagnetic dots. Quantum charge fluctuations and interdot coupling make each Coulomb peak of the conductance at zero interdot coupling split across. The interdot tunnel coupling is determined by the relative orientation of magnetizations of the two dots, leading to different splitting energies of the Coulomb peaks in parallel and antiparallel magnetization alignments. As a result, a very large tunneling magnetoresistance occurs near the Coulomb peaks, and its sign may be either positive or negative.
dc.descriptionsubmitted to Phys. Rev. B
dc.identifierhttps://arxiv.org/abs/cond-mat/0408554
dc.identifierhttp://arxiv.org/abs/cond-mat/0408554
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/24705
dc.subjectMesoscale and Nanoscale Physics
dc.titleLarge Magnetoresistance Induced by Quantum Charge Fluctuations in Magnetic Double Dots
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