Non-Hermitian route to higher-order topology in an acoustic crystal
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DOI: 10.1038/s41467-021-22223-y
Abstract: Topological phases of matter are classified based on their Hermitian Hamiltonians, whose real-valued dispersions together with orthogonal eigenstates form nontrivial topology. In the recently discovered higher-order topological insulators (TIs), the bulk topology can even exhibit… read more here.
Keywords: acoustic crystal; order topology; higher order; topology ... See more keywords