Angle-Resolved and Resonant Photoemission Study of the Valence Bands of α-La0001 on W110Report as inadecuate




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We report a photoelectron spectroscopic study of the valence bands of double hexagonal-close-packed dhcp α-La0001 films epitaxially grown on W110 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

Lanthanum Thin Film, Electronic Structure, Valence Band, Tungsten Surface, Photoemission, Angle-Resolved Spectroscopy

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Enta, Y. , Morimoto, O. , Kato, H. and Sakisaka, Y. 2016 Angle-Resolved and Resonant Photoemission Study of the Valence Bands of α-La0001 on W110. World Journal of Condensed Matter Physics, 6, 17-26. doi: 10.4236-wjcmp.2016.61003.





Author: Yoshiharu Enta1*, Osamu Morimoto2, Hiroo Kato1, Yasuo Sakisaka1

Source: http://www.scirp.org/



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