A Tight-Binding Investigation of the NaxCoO2 Fermi Surface

Preprint

31 August 2004

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0408698

Abstract

We perform an orthogonal basis tight binding fit to an LAPW calculation of paramagnetic Na$_x$CoO$_2$ for several dopings. The optimal position of the apical oxygen at each doping is resolved, revealing a non-trivial dependence of the band structure and Fermi surface on oxygen height. We find that the small e$_{g'}$ hole pockets are preserved throughout all investigated dopings and discuss some possible reasons for the lack of experimental evidence for these Fermi sheets.

Keywords

BINDING INVESTIGATION
ORTHOGONAL BASIS
BAND STRUCTURE
TIGHT BINDING
NAXCOO2 FERMI
FERMI SURFACE
BASIS TIGHT
DOPINGS

All Related Versions

Version 1, 2004-08-31, ArXiv
Published version: Europhysics Letters, 68 (3), 433.

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