Document Type

Article

Publication Date

2005

Journal or Book Title

Physical Review Letters

Volume

95

Issue

13

First Page

136802

DOI

10.1103/PhysRevLett.95.136802

Abstract

The electric field of dipoles localized at the atomic steps of metal surfaces due to the Smoluchowski effect were measured from the electrostatic force exerted on the biased tip of a scanning tunneling microscope. By varying the tip-sample bias the contribution of the step dipole was separated from changes in the force due to van der Waals and polarization forces. Combined with electrostatic calculations, the method was used to determine the local dipole moment in steps of different heights on Au(111) and on the twofold surface of an Al-Ni-Co decagonal quasicrystal.

Comments

This article is from Physical Review Letters 95, no. 13 (2005): 136802, doi:10.1103/PhysRevLett.95.136802.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

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