Partly occupied Wannier functions

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Abstract

We introduce a scheme for constructing partly occupied, maximally localized Wannier functions (WFs) for both molecular and periodic systems. Compared to the traditional occupied WFs the partly occupied WFs possess improved symmetry and localization properties achieved through a bonding-antibonding closing procedure. We demonstrate the equivalence between bonding-antibonding closure and the minimization of the average spread of the WFs in the case of a benzene molecule and a linear chain of Pt atoms. The general applicability of the method is demonstrated through the calculation of WFs for a metallic system with an impurity: a Pt wire with a hydrogen molecular bridge.
Original languageEnglish
JournalPhysical Review Letters
Volume94
Issue number2
Pages (from-to)026405
ISSN0031-9007
DOIs
Publication statusPublished - 2005

Bibliographical note

Copyright 2005 American Physical Society

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