Dual Dirac Nodal Line in Nearly Freestanding Electronic Structure of β-Sn Monolayer.

ABSTRACT: Two-dimensional topological insulators (2D TIs) have distinct electronic properties that make them attractive for various applications, especially in spintronics. The conductive edge states in 2D TIs are protected from disorder and perturbations and are spin-polarized, which restrict current flow to a single spin orientation. In contrast, topological nodal line semimetals (TNLSM) are distinct from TIs because of the presence of a 1D ring of degeneracy formed from two bands that cross each other along a line in the Brillouin zone. These nodal lines are protected by topology and can be destroyed only by breaking certain symmetry conditions, making them highly resilient to disorder and defects. However, 2D TNLSMs do not possess protected boundary modes, which makes their investigation challen

SUBMITTER: Lan YS 

PROVIDER: S-EPMC11328162 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature