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Virginia Commonwealth University

Electrical and Computer Engineering Publications

Series

2006

CONFINED ACOUSTIC PHONONS; QUANTUM WIRES

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Admittance Of Cds Nanowires Embedded In Porous Alumina Template, A. Varfolomeev, D. Zaretsky, V. Pokalyakin, S. Tereshin, S. Pramanik, S. Bandyopadhyay Jan 2006

Admittance Of Cds Nanowires Embedded In Porous Alumina Template, A. Varfolomeev, D. Zaretsky, V. Pokalyakin, S. Tereshin, S. Pramanik, S. Bandyopadhyay

Electrical and Computer Engineering Publications

CdSnanowires of 10nm diameter, electrodeposited in porous alumina films, had shown a conductance bistability in the past [Appl. Phys. Lett.76, 460 (2000)]. The conductance has a high (ON) and a low (OFF) state. In the ON state, different sets of nanowires display qualitatively different relation between the conductance and capacitance. We propose a model to explain this anomalous behavior. Based on this model, we predict that the inelastic mean free path of electrons in the nanowires is 3–3.5nm at room temperature. This short mean free path may be a consequence of acoustic phonon confinement.