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Characterization of high-quality MgB2(0001) epitaxial films on Mg(0001)

Luca Petaccia·Cinzia Cepek·Silvano Lizzit·Rosanna Larciprete·Roberto Macovez·Massimo Sancrotti·Andrea Goldoni
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Abstract

High-grade MgB2(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 MgB2 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 Gamma-A direction and the estimation of the electron-phonon coupling constant l ~ 0.55 for the surface state electrons.

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Luca Petaccia, Cinzia Cepek, Silvano Lizzit, Rosanna Larciprete, Roberto Macovez, Massimo Sancrotti, Andrea Goldoni. 2005-09-07. Characterization of high-quality MgB2(0001) epitaxial films on Mg(0001). https://doi.org/10.1088/1367-2630%2F8%2F1%2F012

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