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Surface and Image-Potential States on the MgB_2(0001) Surfaces

V. M. Silkin·E. V. Chulkov·P. M. Echenique
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Abstract

We present a self-consistent pseudopotential calculation of surface and image-potential states on $MgB_2(0001)$ for both $B$-terminated ($B-t$) and $Mg$-terminated ($Mg-t$) surfaces. We find a variety of very clear surface and subsurface states as well as resonance image-potential states n=1,2 on both surfaces. The surface layer DOS at $E_F$ is increased by 55% at $B-t$ and by 90% at the $Mg-t$ surface compared to DOS in the corresponding bulk layers.

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V. M. Silkin, E. V. Chulkov, P. M. Echenique. 2001-05-31. Surface and Image-Potential States on the MgB_2(0001) Surfaces. https://doi.org/10.1103/physrevb.64.172512

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