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Semi-metal surfaces: A new territory for helium atom scattering measurements

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If you have a question about this talk, please contact Stephen Walley .

The study of semimetal surfaces including those of various topological insulators represents a new wide territory of investigation for helium atom scattering. Owing to the nature of the He-surface scattering process, inelastic scattering intensities convey direct information on the electron-phonon (e-p) coupling strength of these surfaces. As a consequence of the e-p coupling helium scattering can observe subsurface phonon modes which can even be localized several layers beneath the surface.

This talk is part of the Physics and Chemistry of Solids Group series.

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