Temperature dependent sign reversal of the surface contraction of Ag(111)
- 30 May 1994
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 72 (22) , 3574-3577
- https://doi.org/10.1103/physrevlett.72.3574
Abstract
We have studied the structure of the Ag(111) surface as a function of temperature using medium energy ion scattering. We find that the first interlayer spacing is contracted at temperatures below 670 K, but increases at higher temperatures in a nonlinear fashion and is expanded same 10% 80 K below the melting point. As the surface vibration amplitudes increase significantly at the same time, we attribute this sign reversal to enhanced anharmonic effects at the surface.Keywords
This publication has 24 references indexed in Scilit:
- Steps, point defects and thermal expansion at the Au(110) surfaceSurface Science, 1993
- Temperature dependence of interlayer spacings and mean vibrational amplitudes at the Al(110) surfacePhysical Review B, 1993
- LATTICE RELAXATION AND THERMAL EXPANSION AT NOBLE-GAS SURFACES: A MOLECULAR DYNAMICS AND LEED STUDY FOR KR(111)Modern Physics Letters B, 1991
- Enhanced surface anharmonicity observed in vibrations on Cu(110)Physical Review Letters, 1991
- Approach to thermal roughening of Ni(110): A study by high-resolution low-energy electron diffractionPhysical Review Letters, 1990
- Evidence for anomalous thermal expansion at a crystal surfacePhysical Review Letters, 1987
- Surface relaxation and thermal expansion for the (001) face of α-Fe and CuSurface Science, 1978
- Calculations of Surface Thermal ExpansionPhysical Review B, 1973
- Thermal Expansion at a Crystal SurfacePhysical Review B, 1973
- Calculation of Dynamical Surface Properties of Noble-Gas Crystals. I. The Quasiharmonic ApproximationPhysical Review B, 1969