Surface dynamics studied by time-dependent tunneling current
Publication in refereed journal

香港中文大學研究人員

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其它資訊
摘要Scanning tunneling microscopy (STM) is not only an excellent tool for the study of static geometric structures and electronic structures of surfaces due to its high spatial and energy resolution, but also a powerful tool for the study of surface dynamic behaviors, including surface diffusion, molecular rotation, and surface chemical reactions. Because of the limitation of the scanning speed, the video-STM technique cannot study the fast dynamic processes. Alternatively, a time-dependent tunneling current, I-t curve, method is employed in the research of fast dynamic processes. Usually, this method can detect about 1000 times faster dynamic processes than the traditional video-STM method. When placing the STM tip over a certain interesting position on the sample surface, the changing of tunneling current induced by the surface dynamic phenomena can be recorded as a function of time. In this article, we review the applications of the time-dependent tunneling current method to the studies of surface dynamic phenomena in recent years, especially on surface diffusion, molecular rotation, molecular switching, and chemical reaction.
著者Liu Q, Wang KD, Xiao XD
期刊名稱Frontiers of Physics in China
出版年份2010
月份12
日期1
卷號5
期次4
出版社Springer Verlag (Germany)
頁次357 - 368
國際標準期刊號1673-3487
電子國際標準期刊號1673-3606
語言英式英語
關鍵詞molecular rotation; scanning tunneling microscopy (STM); surface chemical reactions; surface diffusion; surface dynamics
Web of Science 學科類別Physics; Physics, Multidisciplinary; PHYSICS, MULTIDISCIPLINARY

上次更新時間 2021-25-01 於 23:45