High-Resolution Angle-Resolved Photoemission Study of the Al(100) Single Crystal

The free-electron-like surface-derived electronic state in Al(100) has been examined in detail by high-resolution angle-resolved photoemission spectroscopy (ARPES). We observed a kink structure in the energy band-dispersion at the energy of ∼ -40 meV, which is derived from the electron-phonon intera...

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Bibliographic Details
Published in:	E-journal of surface science and nanotechnology Vol. 7; pp. 57 - 60
Main Authors:	Jiang, J., Higashiguchi, M., Tobida, N., Tanaka, K., Fukuda, S., Hayashi, H., Shimada, K., Namatame, H., Taniguchi, M.
Format:	Journal Article
Language:	English
Published:	Tokyo The Japan Society of Vacuum and Surface Science 01-01-2009 Japan Science and Technology Agency
Subjects:	Aluminum High index single crystal surfaces Metallic surfaces Phonons Synchrotron radiation photoelectron spectroscopy
Online Access:	Get full text
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Summary:	The free-electron-like surface-derived electronic state in Al(100) has been examined in detail by high-resolution angle-resolved photoemission spectroscopy (ARPES). We observed a kink structure in the energy band-dispersion at the energy of ∼ -40 meV, which is derived from the electron-phonon interaction. Based on the quantitative analyses of the ARPES line shapes, we have obtained the imaginary and real parts of the self-energy. The electron-phonon coupling parameter has been evaluated to be λel-ph = 0.67, which is much larger than the electron-electron coupling parameter λel-el = 0.06. [DOI: 10.1380/ejssnt.2009.57]
ISSN:	1348-0391 1348-0391
DOI:	10.1380/ejssnt.2009.57