Surface Diffusion Anomaly Near Substrate Phase Transition: H on W(100)
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2002
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Language
en
Pages
1-4
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Physical Review Letters, Volume 88, issue 22
Abstract
Using a linear optical diffraction method, we have experimentally studied the long predicted diffusion anomalous behavior for H/W(100) near the reconstructive phase transition of the W(100) substrate. This anomaly manifests itself in the form of a strong dip in the diffusion coefficient D at the transition temperature TC. We interpret the strong reduction of D as a result of the diverging friction damping near the transition. The finite dip in D instead of a vanishing D at TC also demonstrates the importance of the non-Markovian (memory) deviation from the simple instantaneous damping picture.Description
Keywords
diffusion, reconstruction, surface
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Citation
Cai , L , Altman , M S , Granato , E , Ala-Nissila , T , Ying , S C & Xiao , X 2002 , ' Surface Diffusion Anomaly Near Substrate Phase Transition: H on W(100) ' , Physical Review Letters , vol. 88 , no. 22 , 226105 , pp. 1-4 . https://doi.org/10.1103/PhysRevLett.88.226105