Although 2D topological insulators have been experimentally realized, their 1D counterparts remain difficult to investigate. Here, the authors report the observation of 0D topological states localized at the ends of the zigzag-terminated germanene nanoribbons with a width below ∼2 nm, indicating the emergence of a 1D topological insulator.
- Dennis J. Klaassen
- Lumen Eek
- Pantelis Bampoulis
