Surface diffusion modes for Pt dimers and trimers on Pt(001)
Journal Article
·
· Physical Review Letters; (United States)
- Sandia National Laboratories, Albuquerque, New Mexico (USA) Los Alamos National Laboratory, Los Alamos, New Mexico (USA)
Field-ion-microscope observations and molecular statics calculations using embedded-atom-method potentials have identified the surface diffusion modes for Pt dimers and trimers on Pt(001). Dimers migrate by a series of displacements involving exchange between one of the dimer atoms and a substrate atom and have a lower activation barrier for diffusion than monomers. Trimer diffusion involves both exchange and hopping displacements and has an activation barrier comparable to monomers.
- DOE Contract Number:
- AC04-76DP00789; W-7405-ENG-36
- OSTI ID:
- 5401146
- Journal Information:
- Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 67:5; ISSN 0031-9007; ISSN PRLTA
- Country of Publication:
- United States
- Language:
- English
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