Topological bands in the PdSe2 pentagonal monolayer
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Fecha
2022Autor
Bravo S
Pacheco M
Correa J.D
Chico L.
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The electronic structure of monolayer pentagonal palladium diselenide (PdSe2) is analyzed from the topological band theory perspective. Employing first-principles calculations, effective models and symmetry indicators, we find that the low-lying conduction bands are topologically nontrivial, protected by time reversal and crystalline symmetries. Numerical evidence supporting the nontrivial character of the bands is presented. Furthermore, we obtain a relevant physical response from the topological viewpoint, such as the spin Hall conductivity. © 2022 The Royal Society of Chemistry.
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