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

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 journal › Article

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 language	English
Pages (from-to)	1523-1527
Number of pages	5
Journal	Wuli Xuebao/Acta Physica Sinica
Volume	54
Issue number	4
Publication status	Published - 2005 Apr 1

Keywords

Local work function
Scanning tunneling microscope
Step

ASJC Scopus subject areas

Physics and Astronomy(all)

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title = "Local work function measurement on Cu(111)-Au and Cu(111)-Pd surfaces",

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.",

keywords = "Local work function, Scanning tunneling microscope, Step",

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T1 - Local work function measurement on Cu(111)-Au and Cu(111)-Pd surfaces

AU - Jia, Jin Feng

AU - Dong, Guo Cai

AU - Wang, Li Li

AU - Ma, Xu Cun

AU - Xue, Qi Kun

AU - Hasegawa, Y.

AU - Sakurai, T.

PY - 2005/4/1

Y1 - 2005/4/1

N2 - 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.

AB - 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.

KW - Local work function

KW - Scanning tunneling microscope

KW - Step

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