Description |
We investigate the electronic structure of a boride superconductor, ZrB12 employing high resolution photoemission spectroscopy and ab initio band structure calculations. Sharp B 1s and Zr 3d core level spectra exhibit good quality of the sample. The band structure results indicate dominant contribution from the B 2p electronic states in the valence band. However, the experimental spectra indicate large contribution from the Zr 4d states near Fermi level suggesting their important role in the superconductivity. Evolution of the spectral density of states exhibits a pseudogap at low temperatures.
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