Anisotropic Electric Conductivity of Delafossite PdCoO2 Studied by Angle-Resolved Photoemission Spectroscopy
SCIE
SCOPUS
- Title
- Anisotropic Electric Conductivity of Delafossite PdCoO2 Studied by Angle-Resolved Photoemission Spectroscopy
- Authors
- Noh, HJ; Jeong, J; Jeong, J; Cho, EJ; Kim, SB; Kim, K; Min, BI; Kim, HD
- Date Issued
- 2009-06-26
- 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.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/12462
- DOI
- 10.1103/PHYSREVLETT.102.256404
- ISSN
- 0031-9007
- Article Type
- Article
- Citation
- PHYSICAL REVIEW LETTERS, vol. 102, no. 25, page. 256404, 2009-06-26
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