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- W4226302637 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 Bi$_2$Te$_2$Se(111), below $approx 350,$K by helium atom scattering, and thus experimental evidence of a CDW involving Dirac topological electrons. Deviations of the order parameter observed below $180,$K 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 presence of a prominent electron-phonon interaction originating from the Rashba spin-orbit coupling." @default.
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- W4226302637 date "2021-11-03" @default.
- W4226302637 modified "2023-09-24" @default.
- W4226302637 title "Observation of Dirac Charge Density Waves in Bi$_2$Te$_2$Se" @default.
- W4226302637 doi "https://doi.org/10.48550/arxiv.2111.02323" @default.
- W4226302637 hasPublicationYear "2021" @default.
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