%0 Journal Article
%T Local work function measurement on Cu(111)-Au and Cu(111)-Pd surfaces<br>局域功函数图像及其在Cu(111)-Au/Pd表面的应用
%A Jia Jin-Feng
%A Dong Guo-Cai
%A Wang Li-Li
%A Ma Xu-Cun
%A Xue Qi-Kun
%A Y Hasegawa T Sakurai
%A <br>贾金锋
%A 董国材
%A 王立莉
%A 马旭村
%A 薛其坤
%A Y. Hasegawa T. Sakurai
%J 物理学报
%D 2005
%I 
%X In this paper, we report the local work function measurements on the Cu(111)-Au, and Cu(111)-Pd surfaces with scanning tunneling microscopy (STM). We successfully observed the local work function difference between the Au/Pd overlayer and the Cu substrate, the decreased work function at the step edges. We also found that the work function of the Pd film is larger than that of the bulk Pd(111). T he lower work function at step edges can be explained by the dipole moment forma tion. It is demonstrated that the local work function measurement by STM is a po werful way to identify different elements with nanometer resolution.
%K scanning tunneling microscope
%K local work function
%K step<br>扫描隧道显微镜，
%K 局域功函数，
%K 台阶
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=DB3196E113341383&yid=2DD7160C83D0ACED&vid=318E4CC20AED4940&iid=E158A972A605785F&sid=F3699C8B183A53ED&eid=599BE0AAD31F648B&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=12