Publication Date

6-11-2021

Department

Ames Laboratory; Physics and Astronomy

Campus Units

Ames Laboratory, Physics and Astronomy

OSTI ID+

1798872

Report Number

IS-J 10518

DOI

10.1088/2053-1583/ac040f

Journal Title

2D Materials

Volume Number

8

Issue Number

3

First Page

035050

Abstract

We report direct measurements via angle-resolved photoemission spectroscopy (ARPES) of the electronic dispersion of single-layer (SL) CoO2. The Fermi contour consists of a large hole pocket centered at the point. To interpret the ARPES results, we use density functional theory (DFT) in combination with the multi-orbital Gutzwiller Approximation (DFT+GA), basing our calculations on crystalline structure parameters derived from x-ray photoelectron diffraction and low-energy electron diffraction. Our calculations are in good agreement with the measured dispersion. We conclude that the material is a moderately correlated metal. We also discuss substrate effects, and the influence of hydroxylation on the CoO2 SL electronic structure.

DOE Contract Number(s)

AC02-07CH11358, BNL

Language

en

Publisher

Iowa State University Digital Repository, Ames IA (United States)

Available for download on Saturday, June 11, 2022

Included in

Metallurgy Commons

Share

COinS