Low-temperature vibrational characteristics of surface atoms in the presence of a weakly coupled impurity layer
Е. С. СыркинPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR , KharkovIu. M. GelfgatPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR , Kharkov
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The effect of a weakly coupled impurity surface monolayer on the phonon spectrum, root mean square displacements and on the melting temperature of the near-surface layers has been investigated. In particular, a sharp low-temperature maximum in the temperature dependent part of the rms displacements of the surface atoms was found.
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