Order-to-disorder phase-transition study of Pb on Ge(111)
Bedzyk, M. J.
Woicik, J. C.
Patel, J. R.
MetadataShow full item record
CitationFranklin, G. E., M. J. Bedzyk, J. C. Woicik, Chien Liu, J. R. Patel, and J. A. Golovchenko. 1995. Order-to-Disorder Phase-Transition Study of Pb on Ge(111). Physical Review B 51, no. 4: 2440–2445. doi:10.1103/physrevb.51.2440.
AbstractX-ray standing-wave (111) and (111¯) measurements have been performed on the room-temperature and high-temperature phases of a Pb layer on Ge(111). At room temperature, our results support a four-atom–unit-cell surface structure. On passing into the high-temperature phase, we find that there is an increase in the Fourier coefficient along the surface [112¯] direction for the Pb density distribution. Our model, which requires a 0.6-Å in-plane thermal vibration amplitude, is similar to one previously proposed by Hwang and Golovchenko and disagrees with a strictly two-dimensional-liquid interpretation.
Citable link to this pagehttp://nrs.harvard.edu/urn-3:HUL.InstRepos:29406268
- FAS Scholarly Articles