Abstract

We report the hot photoexcited electron transfer across the coaxial interface of a cylindrical core-shellnanowire. Modulation of the transfer rates, manifested as a large tunability of the voltage onset of negativedifferential resistance and of voltage-current phase, is achieved using three different modes. The couplingof electrostatic gating, incident photon energy, and the incident photon intensity to transfer rates isfacilitated by the combined influences of geometric confinement and heterojunction shape on hot-electrontransfer, and by electron-electron scattering rates that can be altered by varying the incident photon flux,with evidence of weak electron-phonon scattering. Dynamic manipulation of this transfer rate permits theintroduction and control of a continuously adjustable phase delay of up to
about 130 within a singlenanometer-scale device element.

Autore Pugliese

• Prete Paola

Tutti gli autori

• G. Chen; E.M. Gallo; O.D. Leaffer; T. McGuckin; Terrence; P. Prete; N. Lovergine; J.E. Spanier

Titolo volume/Rivista

Physical review letters

Anno di pubblicazione

2011

ISSN

0031-9007

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

Non Disponibile

Numero di citazioni Scopus

Non Disponibile

Ultimo Aggiornamento Citazioni

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Settori ERC

Non Disponibile

Codici ASJC

Non Disponibile