【摘要】 Fe在Ru(10 10 )表面上的沉积 ,经过LEED和ARUPS的测量研究 .结果表明 ,经过退火Fe在Ru(10 10 )表面根据覆盖度大小分别形成 (1× 1)和P(2× 1)结构 .当覆盖度大于 10个单层时 ,表面结构不再保持与衬底相关的晶格常数与对称性 ,形成fcc铁的 (111)外延结构 .铁覆盖度较小时 ,费米能级附近的价电子能级与清洁时相似 ,外延fcc铁表面则形成了与表面有关的价电子能级 .更多还原

【Abstract】 The deposition of Fe on the Ru(1010) surface has been studied by low\|energy electron diffraction angle\|resolved UPS and Auger Electron\|Spectroscopy.Upon annealing,Fe overlayers on Ru(1010) formed (1×1) and P (2×1) structures.For Fe coverages more than 10?ML,incommensurate layer of Fe with a fcc(111) face epitaxial structure is formed.For Fe overlayer at low coverages,the valence bands near Fermi level are similar to the clear surface,while for Fe overlayer at high coverages with the fcc(111) epitaxial structure,different energy band structures related to this epitaxial layer were observed.更多还原