MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Comparison between the Full Frequency Integration and the GPP Model in ab-initio GW Calculation of Na Clusters
Soh IshiiKaoru OhnoYoshiyuki Kawazoe
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2001 Volume 42 Issue 11 Pages 2150-2152

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Abstract

An ab initio calculation of electronic excitation energies based on the GW approximation is performed by using the all-electron mixed-basis approach. The generalized plasmon-pole (GPP) model is used to determine the electron self-energyand the results are compared with our previous results using the full frequency integration (S. Ishii, et al., Phys. Rev. B 63 155104 (2001)). It is found that the two methods with and without the GPP model agrees well in the case of sodium clusters.

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© 2001 The Japan Institute of Metals and Materials
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