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- W3083931842 abstract "Topological phases supported by quasi-periodic spin-chain models and their bulk-boundary principles are investigated by numerical and K-theoretic methods. We show that, for both the un-correlated and correlated phases, the operator algebras that generate the Hamiltonians are non-commutative tori, hence the quasi-periodic chains display physics akin to the quantum Hall effect in two and higher dimensions. The robust topological edge modes are found to be strongly shaped by the interaction and, generically, they have hybrid edge-localized and chain-delocalized structures. Our findings lay the foundations for topological spin pumping using the phason of a quasi-periodic pattern as an adiabatic parameter, where selectively chosen quantized bits of magnetization can be transferred from one edge of the chain to the other." @default.
- W3083931842 created "2020-09-14" @default.
- W3083931842 creator A5001336543 @default.
- W3083931842 creator A5021889091 @default.
- W3083931842 creator A5085734763 @default.
- W3083931842 date "2022-01-10" @default.
- W3083931842 modified "2023-10-14" @default.
- W3083931842 title "Topological gaps in quasiperiodic spin chains: A numerical and K-theoretic analysis" @default.
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- W3083931842 doi "https://doi.org/10.1103/physrevb.105.035115" @default.
- W3083931842 hasPublicationYear "2022" @default.
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