Matches in SemOpenAlex for { <https://semopenalex.org/work/W2895042531> ?p ?o ?g. }
- W2895042531 abstract "Topological insulators (TIs) with an inverted bulk band and a strong spin-orbit coupling exhibit gapless topological surface states (TSSs) protected by time-reversal symmetry. Helical spin textures driven by spin-momentum locking offer the opportunity to generate spin-polarized currents and therefore TIs are expected to be used for future spintronic applications. For practical applications TIs are urgently required that are operable at room temperature due to a wide bulk band gap as well as a distinct topological surface state that is robust to atmospheric exposure. Here we show two distinguishable TSSs originating from different terminations on ${mathrm{PbBi}}_{4}{mathrm{Te}}_{4}{mathrm{S}}_{3}$ by using spin- and angle-resolved photoemission spectroscopy. We find that one TSS is persistently observed, while the other becomes invisible upon intentional oxygen exposure. The result signifies the presence of a protected TSS buried under the topmost surface. Our finding paves the way for realizing a topological spintronics device under atmospheric conditions." @default.
- W2895042531 created "2018-10-12" @default.
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- W2895042531 date "2018-10-01" @default.
- W2895042531 modified "2023-10-15" @default.
- W2895042531 title "Enhanced surface state protection and band gap in the topological insulator <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mrow><mml:msub><mml:mi mathvariant=normal>PbBi</mml:mi><mml:mn>4</mml:mn></mml:msub><mml:msub><mml:mi mathvariant=normal>Te</mml:mi><mml:mn>4</mml:mn></mml:msub><mml:msub><mml:mi mathvariant=normal>S</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math>" @default.
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- W2895042531 doi "https://doi.org/10.1103/physrevmaterials.2.104201" @default.
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