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Double ionization energy spectra of small alkali-metal clusters |
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| Authors: | Yoshifumi Noguchi Soh Ishii Yoshiyuki Kawazoe |
| Affiliation: | 1. Department of Physics, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan;2. Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8501, Japan |
| Abstract: | In this article, we calculate the spectra of the double ionization energy (the energy required for adding two electrons to the neutral system) of small alkali-metal clusters (K2 and Li2) including the effect of electron–electron short-range correlation by adding two one-particle energies within the GW approximation and taking into account the electron–electron repulsive interaction effectively. |
| Keywords: | First principles Ladder diagram Bethe–Salpeter equation T-matrix theory All-electron mixed basis approach |