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Lecture P.A. Thiel

Roster

WhenWhere
18 June 2009 FWN-Building 5116.0116, Nijenborgh 4, 9747 AG, Groningen
Speaker: Prof. Dr. P.A. Thiel
Affiliation: Iowa State University, Ames Iowa, USA
Title: Sulfur on Silver: Hunting elusive agents of change
Date: Thu Jun 18, 2009
Start: 11.00
Location: FWN-Building 5116.0116
Host: R. Broer
Telephone: +31 50 363 4374

Abstract

Sulfur is well known to enhance dynamic rearrangements of single-crystal metal surfaces for the coinage metals (Ag, Cu, and Au). It  has been proposed that the associated enhanced surface mass transport  of metal is due to the formation and diffusion of stable metal-sulfur  clusters or complexes. From scanning tunneling microscopy (STM)  images of a Ag(111) surface with adsorbed sulfur below room  temperature, we have been able to “see” clusters that probably  contribute to enhanced transport. We present a detailed theoretical  and experimental analysis of these clusters.

Last modified:22 October 2012 2.30 p.m.