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  The Electron–Phonon Interaction in Non-Stoichiometric Bi2Sr2CaCu2O8+δ Superconductor Obtained from the Diffuse Elastic Scattering of Helium Atoms

Benedek, G., Manson, J. R., Miret-Artés, S., Schmicker, D., & Toennies, J. P. (2024). The Electron–Phonon Interaction in Non-Stoichiometric Bi2Sr2CaCu2O8+δ Superconductor Obtained from the Diffuse Elastic Scattering of Helium Atoms. Condensed Matter, 9(4): 51. doi:10.3390/condmat9040051.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0010-4BF0-B Version Permalink: https://hdl.handle.net/21.11116/0000-0010-4BF1-A
Genre: Journal Article
Other : The Electron–Phonon Interaction in Non-Stoichiometric Bi2Sr2CaCu2O8+delta Superconductor Obtained from the Diffuse Elastic Scattering of Helium Atoms
Other : The Electron–Phonon Interaction in Non-Stoichiometric Bi2Sr2CaCu2O8+δ Superconductor Obtained from the Diffuse Elastic Scattering of Helium Atoms

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 Creators:
Benedek, Giorgio, Author
Manson, Joseph R., Author
Miret-Artés, Salvador, Author
Schmicker, Detlef1, 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: Previously, helium atom scattering (HAS) has been shown to probe the electron–phonon interaction at conducting crystal surfaces via the temperature dependence of the specular peak intensity. This method is now extended to non-stoichiometric superconductors. The electron–phonon interaction, as expressed by the mass-enhancement factor λ, is derived from the temperature dependence of the diffuse elastic scattering intensity, which specifically depends on the non-stoichiometric component responsible for superconductivity. The measured value of the mass-enhancement factor for Bi2Sr2CaCu2O8+δ at the optimal doping δ = 0.16 is λ = 0.55 ± 0.08 is in good agreement with values of λ recently estimated with other methods. This also confirms the relevant role of electron–phonon interaction in high-temperature non-stoichiometric cuprate superconductors.

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Language(s): eng - English
 Dates: 2024-11-25
 Publication Status: Published online
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 Rev. Type: Peer
 Identifiers: DOI: 10.3390/condmat9040051
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Title: Condensed Matter
Source Genre: Journal
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Publ. Info: Basel : MDPI
Pages: 7 Volume / Issue: 9 (4) Sequence Number: 51 Start / End Page: - Identifier: ISSN: 2410-3896
CoNE: https://pure.mpg.de/cone/journals/resource/2410-3896