Work

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

Year: 2024

Type: article

Abstract: Previously helium atom scattering (HAS) has been shown to probe the electron-phonon interac-tion 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 in-teraction, as expressed by the mass-enhancement factor λ is derived from the temperature de-pendence 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+ξ at the optimal doping ξ = 0.16 is λ=0.55±0.08 in good agreement with values of λ recently estimated with other methods. This confirms the relevant role of electron-phonon interaction also in high-temperature non-stoichiometric cuprate superconductors.

Source: Condensed Matter

DOI: 10.3390/condmat9040051

Authors: G. Benedek, J. R. Manson, S. Miret-Artés, D. Schmicker, J. P. Toennies

Institutions: Donostia International Physics Center, University of Milano-Bicocca, Clemson University, Consejo Superior de Investigaciones Científicas, Instituto de Física Fundamental, Max Planck Institute for Dynamics and Self-Organization

Language: English

Topic: Physics of Superconductivity and Magnetism

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,819

OpenAlex ID: W4404694895

FWCI: 0.148

Cites: 23

Cited by: 1

Related to: 10