Journal of Physics: Condensed Matter
We present an embedded-atom-method (EAM) model that accurately describes the vibrational dynamics in the alkali metals Li, Na, K, Rb and Cs. The bulk dispersion curves, frequency-moment Debye temperatures and temperature-dependent entropy Debye temperatures are all in excellent agreement with experimental results. The model is also well suited for studying surface vibrational dynamics in these materials, as illustrated by calculations for the Na(110) surface.
"An Embedded-Atom-Method Model for Alkali-Metal Vibrations," R. B. Wilson and D. M. Riffe, J. Phys.: Condens. Matter 24, 335401 (2012) (doi:10.1088/0953-8984/24/33/335401).