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. 2015 Oct 13;6:8595. doi: 10.1038/ncomms9595

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(a) Two-dimensional projected bulk bands and the surface state bands obtained by the calculation. The energy (E) relative to the Fermi level (E_F) is plotted along – and –. Those crossing the Fermi level are painted by colours; yellow for 7th (α), blue for 8th (β), pink for 9th (γ) and green for the 10th (δ) bands. The surface state bands crossing the Fermi level are depicted by the red curves. (b,c) The calculated band dispersions for the bulk PdBi₂ and for the slab of 11 PdBi₂ layers, respectively, magnified near the band crossing point. E–E_F for respective bands are plotted as a function of momentum k. The bands at the topmost surface are highlighted by red markers in c.

Inline graphic — (a) Two-dimensional projected bulk bands and the surface state bands obtained by the calculation. The energy (E) relative to the Fermi level (E_F) is plotted along – and –. Those crossing the Fermi level are painted by colours; yellow for 7th (α), blue for 8th (β), pink for 9th (γ) and green for the 10th (δ) bands. The surface state bands crossing the Fermi level are depicted by the red curves. (b,c) The calculated band dispersions for the bulk PdBi₂ and for the slab of 11 PdBi₂ layers, respectively, magnified near the band crossing point. E–E_F for respective bands are plotted as a function of momentum k. The bands at the topmost surface are highlighted by red markers in c.