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Screening models and simplified GW approaches: Si & GaN as test cases

  • M. Palummo
  • , R. Del Sole
  • , Lucia Reining
  • , F. Bechstedt
  • , G. Cappellini
  • University of Rome “Tor Vergata”
  • Friedrich-Schiller University
  • Universitá di Cagliari

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)

Abstract

We compare models of diagonal and off-diagonal screening with LDA-RPA full calculations in Si and cubic GaN. Simplified GW calculations relying on these models are also compared with full GW calculations for the same materials. A recipe for simplified GW calculations is obtained which works well for small, moderate and wide gap semiconductors.

Original languageEnglish
Pages (from-to)393-398
Number of pages6
JournalSolid State Communications
Volume95
Issue number6
DOIs
Publication statusPublished - 1 Jan 1995

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