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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/4160

Title: Dynamics of very low energy photoelectrons interacting with image charge of Cs / Cu(111) surface
Authors: Hayashi, K.
Arafune, R.
Ueda, S.
Uehara, Y.
Ushioda, S.
Issue Date: 2005-11-22
Publisher: AMERICAN PHYSICAL SOCIETY
Magazine name: Physical Review B
Volume: 72
Number: 19
Start page: 195425-1
End page: 195425-3
DOI: 10.1103/PhysRevB.72.195425
Abstract: We have measured the very low energy photoelectron spectra of Cs-covered Cu(111) surfaces, and determined the mechanism for the appearance of a spike structure due to the interaction of emitted electron with its image charge. At high Cs coverage of 0.10 and 0.14 monolayers (ML), the spike structure appeared at the vacuum level. No such structure was found at low coverage of 0.06 ML. The vacuum level at high coverage lies in the energy gap at the Γ point in the surface Brillouin zone of the Cu(111) surface, while it lies outside the energy gap at low coverage. These results confirm the validity of our proposed mechanism that the spike structure appears when the vacuum level lies in the energy gap.
Rights: Hayashi, K., Arafune, R., Ueda, S., Uehara, Y., Ushioda, S., Physical Review B, 72(19), 195425, 2005. Copyright 2005 by the American Physical Society. http://link.aps.org/doi/10.1103/PhysRevB.72.195425
URI: http://hdl.handle.net/10119/4160
Material Type: publisher
Appears in Collections:k10-1. 雑誌掲載論文 (Journal Articles)

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