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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.

Angle-Resolved and Resonant Photoemission Study of the Valence Bands of &lt;i&gt;α&lt;/i&gt;-La(0001) on W(110)

Angle-Resolved and Resonant Photoemission Study of the Valence Bands of <i>α</i>-La(0001) on W(110)