Bending strain-driven modification of surface reconstructions: Au(111)

2019-11-30 14:35:44

reconstruction bending strain surface dependent

责任者: Tartaglino, U.;Tosatti, E.;Passerone, D.;Ercolessi, F. 单位: SISSA, Trieste, Italy 来源出处: Physical Review B (Condensed Matter and Materials Physics)(Phys. Rev, B, Condens, Matter Mater. Phys. (USA)),2002/06/15,65(24):241406-1 摘要: Strain can affect the morphology of a crystal surface, and cause modifications of its reconstruction even when weak, as in the case of mechanical bending. We carried out calculations of strain-dependent surface free energy and direct bending simulations demonstrating the change of incommensurate reconstruction in Au(111) under strain, in good agreement with recent data. Time-dependent strain should cause a sliding of the topmost layer over the second, suggesting an interesting case of nanofriction. Bending strain could also be used to fine tune the spacing of selectively absorbed nanoclusters 关键词: adsorption;bending;gold;internal stresses;surface energy;surface reconstruction;bending strain-driven modification;surface reconstructions;Au(111);crystal surface morphology;strain-dependent surface free energy;direct bending simulations;incommensurate reconstruction;time-dependent strain;sliding;nanofriction;selectively absorbed nanoclusters;Au