Temperature dependent LEED study of Pb{1 1 1}

The thermal behavior of Pb{1 1 1} was studied using low-energy electron diffraction (LEED) in the temperature range 11–323 K. The surface interlayer spacings increase with temperature at about the same rate as the bulk up to 0.5 T m , and then increase faster. The relaxation of the surface, which is...

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Bibliographic Details
Published in:Surface science 2009-09, Vol.603 (17), p.2759-2763
Main Authors: Pussi, K., Vuorinen, J., Lindroos, M., Li, H.I., Howe, J.D., Hanna, K.J., Diehl, R.D., Bandyopadhyay, P.K.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
LEED
Physics
Surface
Thermal expansion
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Summary:The thermal behavior of Pb{1 1 1} was studied using low-energy electron diffraction (LEED) in the temperature range 11–323 K. The surface interlayer spacings increase with temperature at about the same rate as the bulk up to 0.5 T m , and then increase faster. The relaxation of the surface, which is larger than for other fcc {1 1 1} surfaces, is maintained in the temperature range studied. Although Pb has a larger expansion coefficient than other metals, the surface thermal expansion behavior is in line with other surfaces, and is consistent with harmonic interplanar potentials.
ISSN:0039-6028
1879-2758
DOI:10.1016/j.susc.2009.07.009