Abstract
This work studies a two-dimensional extension of the Su-Schrieffer-Heeger model on a square lattice. This model has been shown to be a higher order topological insulator, displaying not only edge modes but also corner modes. This work analyzes their main properties, and in particular, their robustness to the presence of disorder. Precise conditions for the existence of zero energy corner modes in the presence of disorder is obtained. Moreover, it is shown how this model can be exactly realised in acoustics using networks of waveguides.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
