First-Principle Description of Correlation Effects in Layered Materials

Preprint

14 March 2006

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0510221

Abstract

We present a first-principles description of anisotropic materials characterized by having both weak (dispersion-like) and strong covalent bonds, based on the Adiabatic--Connection Fluctuation--Dissipation Theorem within Density Functional Theory. For hexagonal boron nitride the in-plane and out of plane bonding as well as vibrational dynamics are well described both at equilibrium and when the layers are pulled apart. Also bonding in covalent and ionic solids is described. The formalism allows to ping-down the deficiencies of common exchange-correlation functionals and provides insight towards the inclusion of dispersion interactions into the correlation functional.

Keywords

All Related Versions

Version 1, 2005-10-10, ArXiv
Version 2, 2006-03-14, ArXiv
Published version: Physical Review Letters, 96 (13), 136404.

This publication has 0 references indexed in Scilit: