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Using temperature to tune film roughness: nonintuitive behavior in a simple system | C R Stoldt
; K J Caspersen
; M C Bartelt
; C J Jenks
; J W Evans
; P A Thiel
; | Date: |
24 Jul 2000 | Journal: | Phys Rev Lett, 85 (4), 800-3 | Abstract: | Ag(100) homoepitaxy constitutes one of the simplest systems in which to study thin-film growth. Yet we find that the roughness variation with temperature is extraordinarily complex. Specifically, as the deposition temperature is reduced from 300 to 50 K, the roughness of 25 monolayer films first increases, then decreases, then increases again. A transition from mound formation to self-affine (semifractal) growth occurs at approximately 135 K. The underlying mechanisms are postulated. An atomistic model incorporating these mechanisms reproduces the experimental data quantitatively. | Source: | PubMed, pmid10991402 | Services: | Forum | Review | Favorites |
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