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Electronic structures of CO adsorbed Pt-skin surface on Pt–Co and Pt–Ni alloys

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Title
Electronic structures of CO adsorbed Pt-skin surface on Pt–Co and Pt–Ni alloys
Author(s)
Jongkeun Jung; Hong, Jisook; Donghan Kim; Minsoo Kim; Shim, Jihoon; Changyoung Kim
Publication Date
2022-03
Journal
Current Applied Physics, v.35, pp.1 - 6
Publisher
Elsevier B.V.
Abstract
© 2021 Korean Physical SocietyBy using angle resolved photoemission spectroscopy, we investigate the electronic structures of Pt-skin layer of Pt–Co and Pt–Ni alloys with CO molecules on the surface. Measured Fermi surface maps and band dispersions reflect the signatures of chemical bonding between Pt-skin layer and CO molecules. Furthermore, the degree of chemical bonding strength of CO molecules, estimated from the energy shift of the participating bands, is found to be reduced on both Pt bimetallic alloys. Our results show how the surface band structure of Pt bimetallic alloys is modified with molecular orbitals of CO molecules on the surface, revealing the important role of the electronic structure in the determination of chemical properties of bimetallic alloys.
URI
https://pr.ibs.re.kr/handle/8788114/11191
DOI
10.1016/j.cap.2021.08.008
ISSN
1567-1739
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > 1. Journal Papers (저널논문)
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