Stress engineering at the nanometer scale: Two-component adlayer stripes

Details Stress engineering at the nanometer scale: Two-component adlayer stripes Stress engineering at the nanometer scale: Two-component adlayer stripes

2011-04-29

arxiv.org/abs/1104.5568v1

Europhysics Letters vol.94, p.38003, y.2011

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, 4 figures

Scientific paper

10.1209/0295-5075/94/38003

Spontaneously formed equilibrium nanopatterns with long-range order are widely observed in a variety of systems, but their pronounced temperature dependence remains an impediment to maintain such patterns away from the temperature of formation. Here, we report on a highly ordered stress-induced stripe pattern in a two-component, Pd-O, adsorbate monolayer on W(110), produced at high temperature and identically preserved at lower temperatures. The pattern shows a tunable period (down to 16 nm) and orientation, as predicted by a continuum model theory along with the surface stress and its anisotropy found in our DFT calculations. The control over thermal fluctuations in the stripe formation process is based on the breaking/restoring of ergodicity in a high-density lattice gas with long-range interactions upon turning off/on particle exchange with a heat bath.

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