Effect of Core Polarization on the Plasma Frequency of Cd, In, and Sn
- 12 August 1985
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 55 (7) , 750-753
- https://doi.org/10.1103/physrevlett.55.750
Abstract
The plasma frequencies of Cd, In, and Sn are determined from a calculation of the long-wavelength, frequency-dependent dielectric function. The mutual interaction between core- and valence-electron charge fluctuations is included within the random-phase approximation. Core polarization is shown to be an important effect and its inclusion leads to values of the plasma frequency in excellent agreement with experiment.Keywords
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