title: Long jumps in surface diffusion.
abstract: Diffusion on metal surfaces is often viewed as the movement of atoms jumping between nearest-neighbor sites. However, statistical predictions suggest that at elevated temperatures longer jumps should become important. Now, with instruments such as the field ion microscope and the scanning tunneling microscope, which reveal individual adsorbed atoms, it has become possible to examine diffusion in some detail. Here we summarize the experimental efforts that have revealed the contributions of long jumps in various diffusion processes.
authors.affiliation: F. Seitz Materials Research Laboratory and Department of Materials Science and Engineering, University of Illinois at Urbana--Champaign, Urbana, IL 61801, USA.
authors.forename: Grazyna
authors.initials: G
authors.lastname: Antczak
authors.forename: Gert
authors.initials: G
authors.lastname: Ehrlich