Sub-Band Spectrum Engineering via Structural Order in Tapered Nanowires.

ABSTRACT: The cross-sectional dimensions of nanowires set the quantization conditions for the electronic subbands they host. These can be used as a platform to realize one-dimesional topological superconductivity. Here we develop a protocol that forces such nanowires to kink and change their growth direction. Consequently, a thin rectangular nanoplate is formed, which gradually converges into a very thin square tip. We characterize the resulting tapered nanowires structurally and spectroscopically by scanning and transmission electron microscopy and scanning tunneling microscopy and spectroscopy and model their growth. A unique structure composed of ordered rows of atoms on the (110) facet of the nanoflag is further revealed by atomically resolved topography and modeled by simulations. We discuss po

SUBMITTER: Song MS 

PROVIDER: S-EPMC8704197 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature