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Photon energy dependent circular dichroism in angle-resolved photoemission from Au(111) surface states

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Title
Photon energy dependent circular dichroism in angle-resolved photoemission from Au(111) surface states
Author(s)
Hanyoung Ryu; Inkyung Song; Beomyoung Kim; Soohyun Cho; Shoresh Soltani; Timur Kim; Moritz Hoesch; Choong Hyun Kim; Changyoung Kim
Publication Date
2017-04
Journal
PHYSICAL REVIEW B, v.95, no.11, pp.115144
Publisher
AMER PHYSICAL SOC
Abstract
We performed angle-resolved photoemission experiments on Au(111) surface with circularly polarized light. Data were taken with photon energies in the range between 20 and 100 eV in order to investigate the photon energy dependent behavior in the circular dichroism (CD). While the magnitude of the normalized CD value varies with a maximum value of about 70%, the sign of CD does not change for the photon energy within the range, inconsistent with the prediction based on the density-functional theory (DFT) calculation. Our calculation of the CD using DFT initial state and free electron final state shows a better consistency with experimental results than an earlier study using the inverse low-energy electron diffraction state as the final state. We briefly discuss the dominating factor that determines the CD from Au(111) states. © 2017 American Physical Society
URI
https://pr.ibs.re.kr/handle/8788114/3431
DOI
10.1103/PhysRevB.95.115144
ISSN
2469-9950
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > 1. Journal Papers (저널논문)
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