abinit/doc/topics/_LDAminushalf.md

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How to perform a LDA-1/2 calculation F. Jollet, G. Zerah

This page gives hints on how to perform a LDA-1/2 calculation with the ABINIT package.

Introduction

This feature is available only in PAW. The LDA-1/2 framework is described in cite:Ferreira2008. In ABINIT, the LDA-1/2 approximation needs to use PAW data files that contain a small potential vminushalf that is added to the local potential inside the code. The LDA-1/2 approach is based on Slater's half occupation technique to restore the band gap of semi-conductors and insulators.

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