Publication

Article Metrics

Citations


Online attention

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

DOI: 10.1103/PhysRevB.95.115144 DOI Help

Authors: Hanyoung Ryu (Seoul National University (SNU); Institute for Basic Science (IBS)) , Inkyung Song (Seoul National University (SNU); Institute for Basic Science (IBS)) , Beomyoung Kim (Advanced Light Source; Pohang University of Science and Technology) , Soohyun Cho (Yonsei University; Institute for Basic Science (IBS)) , Shoresh Soltani (Yonsei University; Institute for Basic Science (IBS), Seoul) , Timur Kim (Diamond Light Source) , Moritz Hoesch (Diamond Light Source) , Choong H. Kim (Seoul National University (SNU); Institute for Basic Science (IBS)) , Changyoung Kim (Seoul National University (SNU); Institute for Basic Science (IBS))
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Physical Review B , VOL 95

State: Published (Approved)
Published: March 2017
Diamond Proposal Number(s): 11445

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.

Subject Areas: Physics


Instruments: I05-ARPES