Novel atomic dynamics at W (111) surfaces

Tsu Y. Fu, Weng J. Wong, Tien T. Tsong

研究成果: 書貢獻/報告類型會議貢獻

摘要

Ultra high vacuum- field ion microscopy was used to study the atomic dynamics at W (111) surfaces. Over hundreds of the observations for atomic processes such as the terrace diffusion, ascending, descending, detachment motion on W (111) surfaces, we find that the activation energy of W clusters diffusion on W (111) as a function of cluster size has an oscillatory and increasing behavior. But, the activation energy of a single W atom is high anomalously. The compact geometric structures are more stable and have higher activation energies of surface diffusion than structures with extra atoms at the periphery. Unlike the general systems, the occurrence temperatures of different processes at W (111) are quite near. These experimental results were used to discuss the formation mechanism of single atom W tips.

原文英語
主出版物標題INEC 2010 - 2010 3rd International Nanoelectronics Conference, Proceedings
頁面885-886
頁數2
DOIs
出版狀態已發佈 - 2010
事件2010 3rd International Nanoelectronics Conference, INEC 2010 - Hongkong, 中国
持續時間: 2010 一月 32010 一月 8

其他

其他2010 3rd International Nanoelectronics Conference, INEC 2010
國家中国
城市Hongkong
期間10/1/310/1/8

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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  • 引用此

    Fu, T. Y., Wong, W. J., & Tsong, T. T. (2010). Novel atomic dynamics at W (111) surfaces. 於 INEC 2010 - 2010 3rd International Nanoelectronics Conference, Proceedings (頁 885-886). [5425152] https://doi.org/10.1109/INEC.2010.5425152