Electric Field Control of Structure, Dimensionality, and Reactivity of Gold Nanoclusters on Metal-Supported MgO Films

Bokwon Yoon and Uzi Landman
Phys. Rev. Lett. 100, 056102 – Published 7 February 2008

Abstract

Electric field control of the structure, dimensionality, and reactivity of gold nanoclusters (Au20) deposited on MgO films of various thicknesses supported on Ag(100) are introduced and studied using first-principles electronic structure calculations. Field-controlled interfacial charging and field-induced dimensionality crossover are predicted. For a field Ez=1V/nm, an optimal planar Au20 island on MgO(8layers)/Ag(100) is determined, while for Ez=0, the preferred structure of the cluster is a tetrahedron. Field control of the reactivity of the adsorbed nanocluster with O2 is discussed.

  • Figure
  • Figure
  • Figure
  • Received 7 September 2007

DOI:https://doi.org/10.1103/PhysRevLett.100.056102

©2008 American Physical Society

Authors & Affiliations

Bokwon Yoon and Uzi Landman*

  • School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332-0430, USA

  • *Corresponding Author: uzi.landman@physics.gatech.edu

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 100, Iss. 5 — 8 February 2008

Reuse & Permissions
Access Options

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×