Quantum size effect in the electron exchange between a H⁻ ion and a thin metal disk

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I. K. Gainullin and I. F. Urazgildin
Department of Physics, Moscow State University, Moscow 119992, Russia

Received 29 June 2006; revised 24 August 2006; published 2 November 2006

Theresonant charge transfer (RCT) between a hydrogen anion and athin aluminum disk is investigated by means of the wave-packetpropagation method that does not exploit the perturbation theory. TheRCT on a thin metal disk is found to exhibitquantum size effects due to the finite size of thedisk. Survival amplitude of ion state has been calculated asa function of the distance to the ion-surface in anormal collision. It is shown that depending on the projectilevelocity, the ion can interact with disk as if withbulk metal, thin film or nano-structure with the energy quantizedby polar and normal coordinates.

URL:	http://link.aps.org/doi/10.1103/PhysRevB.74.205403
DOI:	10.1103/PhysRevB.74.205403
PACS:	79.20.Rf; 79.60.Dp; 73.40.Gk; 73.21.-b 79.20.Rf Atomic, molecular, and ion beam impact and interactions with surfaces 79.60.Dp Photoelectron spectra of adsorbed layers and thin films 73.40.Gk Tunneling (electronic transport) 73.21.-b Electron states and collective excitations in multilayers, quantum wells, mesoscopic, and nanoscale systems YEAR: 2006
KEYWORDS:	hydrogen ions, aluminium, metallic thin films, charge exchange, ion-surface impact, size effect, resonant tunnelling

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