Publications by authors named "Kinga Warda"
Article Synopsis
- - We developed pentagonal PbSnTe nanowires (NWs) with a specific orientation using advanced growth methods and explored their structural stability across various phases through computational models.
- - Our findings showcase that the combination of ionic and covalent bonding leads to the preferential formation of these pentagonal structures in tellurides compared to selenides, along with unique electronic properties.
- - The innovative design of these NWs features a metallic core that connects different electronic bands, differing between various boundaries, potentially paving the way for novel applications in higher-order topology and fractional charge phenomena.
We investigate the electronic, structural, and topological properties of the SnTe and PbTe cubic nanowires using calculations. Using standard and linear-scale density functional theory, we go from the ultrathin limit up to the nanowire thicknesses observed experimentally. Finite-size effects in the ultrathin limit produce an electric quadrupole and associated structural distortions; these distortions increase the band gap, but they get reduced with the size of the nanowires and become less and less relevant.
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