Surface Alloying of Submonolayer Pb on Cu(111) Studied by Photoemission  

作　　者：XU Ming-Chun QIAN Hai-Jie LIU Feng-Qin KRASH Ibrahim LAI Wu-Yan WU Si-Cheng 徐明春;钱海杰;刘凤琴;奎热西;赖武彦;吴思诚(State Key Laboratory of Magnetics,Center for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100080;Synchrotron Radiation Laboratory,Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100039;Department of Physics,Peking University,Beijing 100871)

机构地区：[1]State Key Laboratory of Magnetics,Center for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100080 [2]Synchrotron Radiation Laboratory,Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100039 [3]Department of Physics,Peking University,Beijing 100871

出　　处：《Chinese Physics Letters》2000年第1期49-51,共3页中国物理快报（英文版）

基　　金：Supported by the National Natural Sciences Foundation of China under Grant Nos.19890310 and 19874003.

摘　　要：The reactions of superthin Pb Hlms on a Cu(111)surface with respect to the coverage of Pb and annealing have been studied by synchrotron radiation photoemission.The submonolayer Pb atoms deposited at room temperature are distributed on the Cu(111)surface as two-dimensional(2D)islands.Annealing to 200℃ gives rise to Pb-Cu surface alloy formation.Analyses show that the surface alloy occurs only in the first layer of the Cu(111)surface.As a surfactant,Pb can promote 2D layer-by-layer growth of thin Hlms on Cu(111),but the Pb~Cu surface alloying may have an unfavorable effect on the activation process.

关 键 词：CU(111) alloy ALLOYING 

分 类 号：TG1[金属学及工艺—金属学]