Angle-Resolved and Resonant Photoemission Study of the Valence Bands of α-La(0001) on W(110)
Open Access
- 1 January 2016
- journal article
- Published by Scientific Research Publishing, Inc. in World Journal of Condensed Matter Physics
- Vol. 06 (01), 17-26
- https://doi.org/10.4236/wjcmp.2016.61003
Abstract
We report a photoelectron spectroscopic study of the valence bands of double hexagonal-close-packed (dhcp) α-La(0001) films epitaxially grown on W(110) at room temperature. The La 5d photoemission cross section in the photon energy region from 20 eV to 130 eV was obtained and the valence-band structure of α-La was determined. Except for 4f-related structures, the valence-band structures of dhcp α-La and dhcp β-Ce were found to resemble each other. From the band structure, the crystal structure of the La film was confirmed. No evidence for the existence of a 5d-like surface state near the Fermi energy at the point of the surface Brillouin zone was obtained and a 6s band bottom was identified.Keywords
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