Charge-memory polaron effect in molecular junctions

URN to cite this document:: urn:nbn:de:bvb:355-epub-77926

Ryndyk, Dmitry ; D'Amico, Pino ; Cuniberti, Gianaurelio ; Richter, Klaus

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Date of publication of this fulltext: 05 Aug 2009 13:57

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Abstract

The charge-memory effect, bistability and switching between charged and neutral states of a molecular junction, as observed in recent STM experiments, is considered within a minimal polaron model. We show that in the case of strong electron-vibron interaction the rate of spontaneous quantum switching between charged and neutral states is exponentially suppressed at zero bias voltage but can be ...