Local work function measurement on Cu(111)-Au and Cu(111)-Pd surfaces

Jin Feng Jia, Guo Cai Dong, Li Li Wang, Xu Cun Ma, Qi Kun Xue, Y. Hasegawa, T. Sakurai

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

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). The lower work function at step edges can be explained by the dipole moment formation. It is demonstrated that the local work function measurement by STM is a powerful way to identify different elements with nanometer resolution.

Original languageEnglish
Pages (from-to)1523-1527
Number of pages5
JournalWuli Xuebao/Acta Physica Sinica
Volume54
Issue number4
Publication statusPublished - 2005 Apr
Externally publishedYes

Keywords

  • Local work function
  • Scanning tunneling microscope
  • Step

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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