paper

Electronic Structure of B-2 $p I ¨ $ and $p I ¨ $ States in MgB $_{2}$ , AlB $_{2}$ and ZrB $_{2}$ Single Crystals

arXiv:cond-mat/0307376 · doi:10.1103/PhysRevB.68.064515

Abstract

The effect of electron correlation (EC) on the electronic structure in MgB $_{2}$ , AlB $_{2}$ and ZrB $_{2}$ , is studied by examining the partial density of states (PDOS) of B-2 $p I ¨ $ and $p I ¨ $ orbitals using the polarization dependence of x-ray emission and absorption spectra. The discrepancies between observed and calculated PDOSs cannot be attributed to EC effects. The present results suggest that the EC effect is less than the experimental error ( $\sim$ 0.2 eV), which indirectly supports a scenario that electron-phonon interaction plays an essential role in the occurrence of superconductivity.

to appear in Phys. Rev. B

Electronic Structure of B-2pI¨ and pI¨ States in MgB2​, AlB2​ and ZrB2​ Single Crystals

Abstract

Electronic Structure of B-2 $p I ¨ $ and $p I ¨ $ States in MgB $_{2}$ , AlB $_{2}$ and ZrB $_{2}$ Single Crystals