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Title: Brownian Motion of 2D Vacancy Islands by Adatom Terrace Diffusion

Abstract

We have studied the Brownian motion of two-dimensional (2D) vacancy islands on Ag(110) at temperatures between 175 and 215K. While the detachment of adatoms from the island and their diffusion on the terrace are permitted in this temperature range, the periphery diffusion of single adatoms is prohibited. The present scanning tunneling microscopy results provide the first direct experimental proof that the Brownian motion of the islands follows a simple scaling law with terrace diffusion being the rate limiting process. The activation energy of the vacancy island motion is determined to 0.41eV.

Authors:
;
Publication Date:
Sponsoring Org.:
(US)
OSTI Identifier:
40204680
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 86; Journal Issue: 25; Other Information: DOI: 10.1103/PhysRevLett.86.5739; Othernumber: PRLTAO000086000025005739000001; 016126PRL; PBD: 18 Jun 2001; Journal ID: ISSN 0031-9007
Publisher:
The American Physical Society
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ACTIVATION ENERGY; DIFFUSION; ISLANDS; SCALING LAWS; SCANNING TUNNELING MICROSCOPY

Citation Formats

Morgenstern, Karina, L, and Besenbacher, Flemming. Brownian Motion of 2D Vacancy Islands by Adatom Terrace Diffusion. United States: N. p., 2001. Web. doi:10.1103/PhysRevLett.86.5739.
Morgenstern, Karina, L, & Besenbacher, Flemming. Brownian Motion of 2D Vacancy Islands by Adatom Terrace Diffusion. United States. https://doi.org/10.1103/PhysRevLett.86.5739
Morgenstern, Karina, L, and Besenbacher, Flemming. 2001. "Brownian Motion of 2D Vacancy Islands by Adatom Terrace Diffusion". United States. https://doi.org/10.1103/PhysRevLett.86.5739.
@article{osti_40204680,
title = {Brownian Motion of 2D Vacancy Islands by Adatom Terrace Diffusion},
author = {Morgenstern, Karina and L and Besenbacher, Flemming},
abstractNote = {We have studied the Brownian motion of two-dimensional (2D) vacancy islands on Ag(110) at temperatures between 175 and 215K. While the detachment of adatoms from the island and their diffusion on the terrace are permitted in this temperature range, the periphery diffusion of single adatoms is prohibited. The present scanning tunneling microscopy results provide the first direct experimental proof that the Brownian motion of the islands follows a simple scaling law with terrace diffusion being the rate limiting process. The activation energy of the vacancy island motion is determined to 0.41eV.},
doi = {10.1103/PhysRevLett.86.5739},
url = {https://www.osti.gov/biblio/40204680}, journal = {Physical Review Letters},
issn = {0031-9007},
number = 25,
volume = 86,
place = {United States},
year = {Mon Jun 18 00:00:00 EDT 2001},
month = {Mon Jun 18 00:00:00 EDT 2001}
}