Abstract
In situ scanning tunneling microscopy observations of 1–2 monolayer thick Au films on Pt(111) electrodes are presented, which show a complex, potential-dependent structural phase behavior of the Au film. Starting from a pseudomorphic structure at [Formula presented], a sequence of transitions into dislocation network structures occurs with increasing potential: [Formula presented] “striped phase” [Formula presented] “hex phase” in the Au bilayer, [Formula presented] striped phase in the Au monolayer. This is explained by a reduction of the in-plane stress in the Au surface layer(s) due to anion adsorption and a strain energy minimization as described by the Frenkel-Kontorova model.
| Original language | English |
|---|---|
| Pages (from-to) | 4 |
| Number of pages | 1 |
| Journal | Physical Review Letters |
| Volume | 90 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 1 Jan 2003 |
| Externally published | Yes |