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Lead band structure

Moreno
in Quantum Theory

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According to this picture there exist a certain bandgap (over 1 eV) in Lead between the lowest band (which I assume corresponds to some hole states) and all other bands (which I assume correspond to all other electron and hole states). Does it mean that Lead is a unique metal with band gap between a hole and electron states? Does it suppose to have some semiconducting properties then?

 https://www.researchgate.net/figure/Color-online-Calculated-band-structure-of-bulk-lead-with-solid-lines-and-without_fig1_45935753

(Color online) Calculated band structure of bulk lead, with (solid lines) and without (dashed lines) inclusion of the spin-orbit coupling. Squares and circles mark regions where the SO-induced band splitting is reflected in the density of states shown in Fig. 2. The horizontal dotted line represents the Fermi level. 

Edited by Moreno

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