Work function oscillation of Pb quantum islands on Cu(111) surface: Observation by Gundlach oscillation

Chun-Liang Lin*, M. C. Yang, W. B. Su, S. P. Lin, S. M. Lu, H. Y. Lin, C. S. Chang, T. Y. Fu, Tien T. Tsong

*此作品的通信作者

研究成果: Article同行評審

7 引文 斯高帕斯(Scopus)

摘要

The Gundlach oscillation in scanning tunneling spectroscopy is used to measure the work function of Pb quantum islands grown on a Cu(111) substrate. The results reveal that the work function varies in oscillation with island thickness, which can be attributed to the existence of the quantum well states within the islands. The undulation of the work function is consistent with the theoretical calculations for a thickness from 6 to 15 atomic layers. While the island is grown layer-by-layer, it is found that the work function decreases (increases) whenever one (two) subband(s) is(are) added to the occupied states of the island.

原文English
頁(從 - 到)855-862
頁數8
期刊Chinese Journal of Physics
48
發行號6
出版狀態Published - 1 12月 2010

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