Surface and image-potential states on MgB2(0001) surfaces

Article

关键词: ELECTRON-PHONON;    MGB2;    DISPERSION;    SUPERCONDUCTIVITY;    PRESSURE;    LAYER;    GAP;   

DOI  :  10.1103/PhysRevB.64.172512

来源: SCIE

【 摘 要 】

We present self-consistent pseudopotential calculations of surface and image-potential states on MgB2(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 density of states (DOS) at EF is increased by 55% at the B-t and by 90% at the Mg-t surface compared to DOS in the corresponding bulk layers.

【 授权许可】

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