Quantum size effect on adatom surface diffusion

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Publication Type Journal Article
School or College College of Engineering
Department Materials Science & Engineering
Creator Liu, Feng
Other Author Ma, Li-Ying; Tang, Lin; Guan, Ze-Lei; He, Ke; Kang, An; Ma, Xu-Cun; Jia, Jin-Feng; Xue, Qi-Kun; Han, Y.; Huang, Steve
Title Quantum size effect on adatom surface diffusion
Date 2006-12
Description Using scanning tunneling microscopy, we demonstrate that the nucleation density of Fe islands on the surface of nanoscale Pb films oscillates with the film thickness, providing a direct manifestation of the quantum size effect on surface diffusion. The Fe adatom diffusion barriers were derived to be 204 ± 5 and 187 ± 5 meV on a 21 and 26 monolayer (ML) Pb film, respectively, by matching the kinetic Monte Carlo simulations to the experimental island densities. The effect is further illustrated by the growth of Fe islands on wedged Pb films, where the Fe island density is consistently higher on the odd-layer films than on the even-layer films in the thickness range of 11 to 15 ML.
Type Text
Publisher American Physical Society
Journal Title Physical Review Letters
Volume 97
Issue 26
DOI 10.1103/PhysRevLett.97.266102
citatation_issn 0031-9007
Subject Quantum size effect; QSE; Adatoms; Surface diffusion; Fe islands; Nanoscale metallic structures; Epitaxial growth; Pb films
Subject LCSH Surface chemistry; Nucleation; Nanostructured materials; Epitaxy; Metallic films
Language eng
Bibliographic Citation Ma, L.-Y., Tang, L., Guan, Z.-L., He, K., Kang, A., Ma, X.-C., Jia, J.-F., Xue, Qi-Kun, Han, Y., Huang, S. (2006). Quantum size effect on adatom surface diffusion. Physical Review Letters, 97(26), 266102.
Rights Management (c) American Physical Society http://dx.doi.org/10.1103/PhysRevLett.97.266102
Format Medium application/pdf
Format Extent 316,516 bytes
Identifier ir-main,12136
ARK ark:/87278/s6ft949x
Setname ir_uspace
Date Created 2012-06-13
Date Modified 2021-05-06
ID 704201
Reference URL https://collections.lib.utah.edu/ark:/87278/s6ft949x
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