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  Surface lattice dynamics and electron-phonon interaction in cesium ultra-thin films

Campi, D., Bernasconi, M., Benedek, G., Graham, A. P., & Toennies, J. P. (2017). Surface lattice dynamics and electron-phonon interaction in cesium ultra-thin films. Physical Chemistry Chemical Physics, 19(25), 16358-16364. doi:10.1039/c7cp01572k.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-9E7C-8 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-9E7D-6
Genre: Journal Article

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 Creators:
Campi, D., Author
Bernasconi, M., Author
Benedek, G., Author
Graham, A. P.1, Author              
Toennies, Jan Peter1, Author              
Affiliations:
1Emeritus Group Molecular Interactions, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2063297              

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 Abstract: The phonon dispersion curves of ultrathin films of Cs(110) on Pt(111) measured with inelastic helium atom scattering (HAS) are reported and compared with density-functional perturbation theory (DFPT) calculations. The combined HAS and DFPT analysis also sheds light on the bulk phonon dynamics of bcc-Cs, on which very little is known from neutron scattering due to its large neutron capture cross-section. Moreover the temperature dependence of the elastic HAS Debye-Waller exponent of Cs(110)/Cu(111) ultrathin films allows for an estimation of the electron-phonon coupling strength l as a function of the film thickness.

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Language(s): eng - English
 Dates: 2017-06-142017-07-07
 Publication Status: Published in print
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 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1039/c7cp01572k
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Title: Physical Chemistry Chemical Physics
Source Genre: Journal
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Pages: - Volume / Issue: 19 (25) Sequence Number: - Start / End Page: 16358 - 16364 Identifier: -