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Higher-Order Topological Odd-Parity Superconductors.

08:00 EDT 25th October 2019 | BioPortfolio

Summary of "Higher-Order Topological Odd-Parity Superconductors."

The topological property of a gapped odd-parity superconductor is jointly determined by its pairing nodes and Fermi surfaces in the normal state. We reveal that the contractibility of Fermi surfaces without crossing any time-reversal invariant momentum and the presence of nontrivial Berry phase on Fermi surfaces are two key conditions for the realization of higher-order topological odd-parity superconductors. When the normal state is a normal metal, we reveal the necessity of removable Dirac pairing nodes and provide a general and simple principle to realize higher-order topological odd-parity superconductors. Our findings can be applied to design new platforms of higher-order topological superconductors, as well as higher-order topological insulators owing to their direct analogy in Hamiltonian description.

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This article was published in the following journal.

Name: Physical review letters
ISSN: 1079-7114
Pages: 177001

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