We propose theoretically a spin memory effect in quantum dots and single molecules with strong electron- vibron interaction and coupled to ferromagnetic leads. The controlled electrical switching between spin states is achieved due to an interplay between Franck-Condon blockade of electron transport at low voltages and spin-dependent tunneling at high voltages. Spin lifetimes, currents, and spin polarizations are calculated as a function of the bias voltage by the master-equation method. We further propose to use a third ferromagnetic tunneling contact to probe and readout the spin state.

Single-spin polaron memory effect in quantum dots and single molecules / Ryndyk, Dmitry A; D'Amico, Pino; Richter, Klaus. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - 81:(2010), pp. 115333-1-115333-5. [10.1103/PhysRevB.81.115333]

Single-spin polaron memory effect in quantum dots and single molecules

D'AMICO, PINO;
2010

Abstract

We propose theoretically a spin memory effect in quantum dots and single molecules with strong electron- vibron interaction and coupled to ferromagnetic leads. The controlled electrical switching between spin states is achieved due to an interplay between Franck-Condon blockade of electron transport at low voltages and spin-dependent tunneling at high voltages. Spin lifetimes, currents, and spin polarizations are calculated as a function of the bias voltage by the master-equation method. We further propose to use a third ferromagnetic tunneling contact to probe and readout the spin state.
81
115333-1
115333-5
Single-spin polaron memory effect in quantum dots and single molecules / Ryndyk, Dmitry A; D'Amico, Pino; Richter, Klaus. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - 81:(2010), pp. 115333-1-115333-5. [10.1103/PhysRevB.81.115333]
Ryndyk, Dmitry A; D'Amico, Pino; Richter, Klaus
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11380/1077497
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