title: Electronic structure of the NaxCoO2 surface.
abstract: The idea that surface effects may play an important role in suppressing eg' Fermi surface pockets on NaxCoO2 (0.333 < or = x < or = 0.75) has been frequently proposed to explain the discrepancy between local-density approximation calculations which find eg' hole pockets present and Angle resolved photoemission spectra (ARPES) experiments, which do not observe the hole pockets. Since ARPES is a surface sensitive technique, it is important to investigate the effects that surface formation will have on the electronic structure. We show that a combination of surface formation and contamination effects could resolve the ongoing controversy between ARPES experiments and theory.
authors.affiliation: Code 6393, Naval Research Laboratory, Washington, DC 20375, USA.
authors.forename: D
authors.initials: D
authors.lastname: Pillay
authors.forename: M D
authors.initials: MD
authors.lastname: Johannes
authors.forename: I I
authors.initials: II
authors.lastname: Mazin