Fermi surface and surface electronic structure of delafossite PdCoO2
SCIE
SCOPUS
- Title
- Fermi surface and surface electronic structure of delafossite PdCoO2
- Authors
- Kim, K; Choi, HC; Min, BI
- Date Issued
- 2009-07
- Publisher
- AMER PHYSICAL SOC
- Abstract
- We have investigated the Fermi surface (FS) and electronic structure of delafossite PdCoO2. We have explored the dependence of electronic structure on the surface termination, considering both CoO2- and Pd-terminated PdCoO2 slabs. Two FS features are obtained, one larger FS from the Pd-related bulk states and the other smaller one from surface states. The bulk FS is produced mainly by the Pd 4d(3z2-r2)-Pd 5s-hybridized state, Psi(d-s), which is responsible for the high in-plane conductivity in PdCoO2. The surface FS observed in angle-resolved photoemission spectroscopy is found to be produced by the hybridized Co t(2g)-O 2p surface states for the CoO2- terminated PdCoO2. Due to the localized nature of the surface states, consideration of the spin-orbit and exchange interactions is essential to describe surface electronic structures near E-F correctly.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/12204
- DOI
- 10.1103/PHYSREVB.80.035116
- ISSN
- 1098-0121
- Article Type
- Article
- Citation
- PHYSICAL REVIEW B, vol. 80, no. 3, 2009-07
- Files in This Item:
-
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.