ArticleNanomaterials (Basel, Switzerland)2023
Observation of Dirac Charge-Density Waves in Bi
Article in Nanomaterials (Basel, Switzerland), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed.
- The Electron-Phonon Interaction at Vicinal Metal Surfaces Measured with Helium Atom Scattering.Nanomaterials (Basel, Switzerland) · 2023Article
- Surface properties of 1T-TaSFrontiers in chemistry · 2023Article
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Authors and funding
5 authors.
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Abstract
While parallel segments in the Fermi level contours, often found at the surfaces of topological insulators (TIs), would imply "strong" nesting conditions, the existence of charge-density waves (CDWs)-periodic modulations of the electron density-has not been verified up to now. Here, we report the observation of a CDW at the surface of the TI Bi2Te2Se(111), below ≈350K, by helium-atom scattering and, thus, experimental evidence for a CDW involving Dirac topological electrons. Deviations of the order parameter observed below 180K, and a low-temperature break of time reversal symmetry, suggest the onset of a spin-density wave with the same period as the CDW in the presence of a prominent electron-phonon interaction, originating from Rashba spin-orbit coupling.
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