Systematic construction of square-root topological insulators and superconductors
We propose a general scheme to construct a Hamiltonian H_{root} describing a square root of an original Hamiltonian H_{original} based on the graph theory. The square-root Hamiltonian is defined on the subdivided graph of the original graph of H_{original}, where the subdivided graph is obtained by...
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| Format: | Article |
| Language: | English |
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American Physical Society
2020-09-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.2.033397 |