Dielectric response functions and Coulomb repulsion parameters in bcc and 9R lithium

The static dielectric response functions are calculated for both the room-temperature bcc and low temperature 9R phases of Li, and used for estimating the Coulomb repulsion parameters (mu*). With a full dielectric matrix approach within the local-density-functional approximation, the values of mu* for bce and 9R Li are estimated to be 0.157 and 0.160, respectively, much higher than most estimates for sp metals. The enhancement of mu* is attributed to the weak dielectric screening caused by the exchange-correlation effect and the peculiar conduction-band structure with a large dip in the density of states.
Publisher
AMERICAN PHYSICAL SOC
Issue Date
1998-06
Language
ENG
Keywords

ALKALI-METALS; ELECTRON; SUPERCONDUCTIVITY; PSEUDOPOTENTIALS; TEMPERATURE; TRANSITION

Citation

PHYSICAL REVIEW B, v.57, no.23, pp.14684 - 14689

ISSN
0163-1829
URI
http://hdl.handle.net/10203/73270
Appears in Collection
PH-Journal Papers(저널논문)
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