2002/05/30 by Shobhana Narasimhan, Narasimhan, Shobhana, Raghani Pushpa +1
Earth and Planetary Sciences · Physics and Astronomy · #Advanced Chemical Physics Studies #FOS: Physical sciences #Magnetic properties of thin films #Materials Science (cond-mat.mtrl-sci) #Theoretical and Computational Physics #cond-mat.mtrl-sci #nanoparticles nucleation surface interactions
paper · pdf · doi:10.48550/arxiv.cond-mat/0205640
Text file (in RevTeX4 format) + 3 gzipped postscript figures
arxiv created 2002/05/30 · openalex publication_date 2002/05/30 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We have studied the reconstruction of Pt(111) theoretically using a\ntwo-dimensional Frenkel-Kontorova model for which all parameters have been\nobtained from ab initio calculations. We find that the unreconstructed surface\nlies right at the stability boundary, and thus it is relatively easy to induce\nthe surface to reconstruct into a pattern of FCC and HCP domains, as has been\nshown experimentally. The top layer is very slightly rotated relative to the\nsubstrate, resulting in the formation of "rotors" at intersections of domain\nwalls. The size and shape of domains is very sensitive to the density in the\ntop layer, the chemical potential, and the angle of rotation, with a smooth and\ncontinuous transition from the honeycomb pattern to a Moire pattern, via\ninterlocking triangles and bright stars. Our results show clearly that the\ndomain patterns found on several close-packed metal surfaces are related and\ntopologically equivalent.\n