2005/09/07 by Luca Petaccia, Cinzia Cepek, Silvano Lizzit +4
Physics and Astronomy · #Physics of Superconductivity and Magnetism #Superconductivity in MgB2 and Alloys #Surface and Thin Film Phenomena #cond-mat.mtrl-sci #cond-mat.supr-con
paper · pdf · doi:10.1088/1367-2630/8/1/012
15 text pages, 6 figures Submitted for publication
arxiv created 2005/09/07 · openalex publication_date 2006/01/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
High-grade MgB 2 (0001) films were grown on Mg(0001) by means of ultra-high-vacuum molecular beam epitaxy. Low-energy electron diffraction and x-ray diffraction data indicate that thick films are formed by epitaxially oriented grains with MgB 2 bulk structure. The quality of the films allowed angle-resolved photoemission and polarization dependent x-ray absorption measurements. For the first time, we report the band mapping along the Γ-A direction and the estimation of the electron–phonon coupling constant λ = 0.55 ± 0.06 for the surface state electrons.