Abstract
Phonon dispersion, binding energy, compressibility and elastic constants of alkali-metals have been studied using a modified form of the Ashcroft potential and self-consistent form of electron screening due to Singwi et al. The proposed potential successfully reproduces the phonon spectra and other properties of all the five metals except for the crossover between Δ1 and Δ5 branches for lithium —which may be attributed to the very small amplitude of the form factors atq=2kF. An improvement corresponding to this effect could reproduce Kohnanomaly and the crossover simultaneously.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
