| Full text | |
| Author(s): |
Total Authors: 4
|
| Affiliation: | [1] Inst Nacl Pesquisas Espaciais, Lab Associado Sensores & Mat, BR-12245970 Sao Paulo - Brazil
[2] Brown Univ, Dept Phys, Providence, RI 02912 - USA
[3] Oakland Univ, Dept Phys, Rochester, MI 48309 - USA
[4] Aalto Univ, Sch Sci, Dept Appl Phys, FI-00076 Espoo - Finland
[5] Aalto Univ, Sch Sci, COMP Ctr Excellence, FI-00076 Espoo - Finland
Total Affiliations: 5
|
| Document type: | Journal article |
| Source: | Physical Review Letters; v. 111, n. 12 SEP 17 2013. |
| Web of Science Citations: | 5 |
| Abstract | |
We investigate the dynamics of a compressively strained adsorbed layer on a periodic substrate via a simple two-dimensional model that admits striped and hexagonal incommensurate phases. We show that the mass transport is superfast near the striped-hexagonal phase boundary and in the hexagonal phase. For an initial step profile separating a bare substrate region (or ``hole'') from the rest of a striped incommensurate phase, the superfast domain wall dynamics leads to a bifurcation of the initial step profile into two interfaces or profiles propagating in opposite directions with a hexagonal phase in between. This yields a theoretical understanding of the recent experiments for the Pb/Si(111) system. (AU) | |
| FAPESP's process: | 07/08492-9 - Dynamics, topological defects and phase transitions in ordered media |
| Grantee: | Enzo Granato |
| Support type: | Research Projects - Thematic Grants |