Surface states and their possible role in the superconductivity of MgB2

Abstract

We report layer-Korringa-Kohn-Rostocker calculations for bulk and surface states as well as the corresponding angle resolved photoemission (ARPES) intensities of MgB2. Our theoretical results reproduce very well the recent ARPES data by Uchiyama et al., cond-mat/0111152. At least two surface states are assigned. Consequences of SFS on the anisotropy of the upper critical fields and other properties in the superconducting state of small grains in micropowder samples are briefly discussed.

4pages, 6figures, corrected typos, references added

References in corpus (11)

• High-Resolution Photoemission Study of MgB2
• Electronic structure of MgB${}_2$ from angle-resolved photoemission spectroscopy
• de Haas-van Alphen effect in single crystal MgB_2
• Anisotropy of superconducting MgB2 as seen in electron spin resonance and magnetization data
• Determination of superconducting anisotropy from magnetization data on random powders as applied to LuNi${}_2$B${}_2$C, YNi${}_2$B${}_2$C and MgB${}_2$
• Fermi Surfaces of Diborides: MgB2 and ZrB2
• Interpretation of the de Haas - van Alphen experiments in MgB2
• High $T_c$ superconductivity in MgB${}_2$ by nonadiabatic pairing
• Surface and Image-Potential States on the MgB_2(0001) Surfaces
• Surface effects in multiband superconductors. Application to MgB${}_2$
• ${}^{11}$B NMR detection of the magnetic field distribution in the mixed superconducting state of MgB${}_2$

Cited by in corpus (2)

• Surface Contribution to the Superconducting Properties of MgB2 Single Crystals
• Tuning MgB_2(0001) surface states