Anisotropic Electric Conductivity of Delafossite PdCoO2 Studied by Angle-Resolved Photoemission Spectroscopy
- Title
- Anisotropic Electric Conductivity of Delafossite PdCoO2 Studied by Angle-Resolved Photoemission Spectroscopy
- Authors
- NOH, HJ; JEONG, J; CHO, EJ; KIM, SB; KIM, K; MIN, BI; KIM, HD; null
- Date Issued
- 2009-06
- Publisher
- AMER PHYSICAL SOC
- Abstract
- An explicit connection between the electronic structure and the anisotropic high conductivity of delafossite-type PdCoO2 has been established by angle-resolved photoemission spectroscopy (ARPES) and core-level x-ray photoemission spectroscopy. The ARPES spectra show that a large hexagonal electronlike Fermi surface (FS) consists of very dispersive Pd 4d states. The carrier velocity and lifetime are determined from the ARPES data, and the conductivity is calculated by a solution of the Boltzmann equation, which demonstrates that the high anisotropic conductivity originates from the high carrier velocity, the large two-dimensional FS, and the long lifetime of the carriers.
- Keywords
- TRANSPARENT THIN-FILMS; X-RAY PHOTOEMISSION; METALLIC CONDUCTIVITY; SPECTRA; CUALO2
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/28287
- DOI
- 10.1103/PHYSREVLETT.
- ISSN
- 0031-9007
- Article Type
- Article
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- There are no files associated with this item.
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