Clustering and devils staircase in a one-dimensional adsorbate system

2019-10-25 05:53:11

range chemical Japan periodic devils

责任者: Saito, Y. 单位: Dept. of Phys., Keio Univ., Yokohama, Japan 来源出处: Journal of the Physical Society of Japan(J. Phys. Soc. Jpn. (Japan)),1999/11/,68(11):3505-8 摘要: Atoms adsorbed heteroepitaxially on a substrate interact with a short-range chemical cohesion -J and a long-range elastic repulsion ur-3. In one dimension, adsorbed atoms can form clusters and arrange in periodic structures, whose periodicity shows a devils staircase. On increasing J/u, the range of the chemical potential ΔH where periodic structures are achieved decreases, and vanishes at an upsilon point. For J larger than the upsilon point value, the phase transition turns out to be of a first-order 关键词: adsorbed layers;chemical potential;epitaxial growth;nanostructured materials;devils staircase;one-dimensional adsorbate system;heteroepitaxial layers;short-range chemical cohesion;long-range elastic repulsion;clusters;periodic structures;upsilon point;first order phase transition