|
HKUST Institutional Repository >
Physics >
PHYS Journal/Magazine Articles >
Please use this identifier to cite or link to this item:
http://hdl.handle.net/1783.1/2370
|
| Title: | Time dependent tunneling spectroscopy for studying surface diffusion confined in nanostructures |
| Authors: | Wang, Kedong
Zhang, Chun
Loy, Michael M.
Xiao, Xudong |
| Keywords: | Silicon
Elemental semiconductors
Surface diffusion
Scanning tunnelling microscopy
Nanostructured materials |
| Issue Date: | 25-Jan-2005 |
| Citation: | Physical review letters, v. 94, p. 036103, 2005 |
| Abstract: | By confining a diffusion atom in a nanometer region using surface potential heterogeneity, we have successfully employed a time-dependent tunneling spectroscopy to quantitatively study its random motion. A hopping rate in the range of 1-104 Hz, ~3 orders of magnitude faster than those accessible by the existing diffusion methods based on scanning tunneling microscopy, was demonstrated for single Cu atoms diffusing in the faulted half unit cell of Si(111)7x7. Our technique is potentially useful to detect fast diffusion processes such as H quantum diffusion at atomic scale. |
| Rights: | Phys. Rev. Lett. © copyright (2005) American Physical Society. The Journal's web site is located at http://prl.aps.org/ |
| URI: | http://hdl.handle.net/1783.1/2370 |
| Appears in Collections: | PHYS Journal/Magazine Articles
INST Journal/Magazine Articles
|
Files in This Item:
| File |
Description |
Size | Format |
|---|
| KedongPRLrev2.pdf | pre-published version | 248Kb | Adobe PDF | View/Open |
|
Find published version via |
All items in this Repository are protected by copyright, with all rights reserved.
|
