Displacement distribution and atomic jump direction in diffusion of Ir atoms on the Ir(001) surface
- 25 June 1990
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 64 (26), 3147-3150
- https://doi.org/10.1103/physrevlett.64.3147
Abstract
On the Ir{001} surface an Ir adatom is surprisingly found to jump along the 〈001〉 direction instead of along the smoother closely packed 〈110〉 atomic channel of the substrate, probably by an atomic exchange mechanism. The sites visited by one diffusing adatom therefore form a c(2×2) net of the substrate lattice. The displacement distributions derived are consistent with those expected from a discrete random walk with the atomic jump length of the nearest-neighbor distance of the c(2×2) net.Keywords
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