Title: Interplay between lattice dynamics and superconductivity in Nb3Sn thin films
Authors: Couet, Sebastien ×
Peelaers, H
Trekels, Maarten
Houben, Kelly
Hu, M. Y
Zhao, J. Y
Bi, W
Alp, E. E
Menéndez Dalmau, Enric
Partoens, B
Peeters, F. M
Van Bael, Margriet
Vantomme, André
Temst, Kristiaan #
Issue Date: 2013
Publisher: Published by the American Physical Society through the American Institute of Physics
Series Title: Physical Review B, Condensed Matter and Materials Physics vol:88 issue:4
Article number: 045437
Abstract: We investigate the link between superconductivity and atomic vibrations in Nb3Sn films with a thickness
ranging from 10 to 50 nm. The challenge of measuring the phonon density of states (PDOS) of these films has
been tackled by employing the technique of nuclear inelastic scattering by 119Sn isotopes to reveal the Sn-partial
phonon density of states. With the support of ab initio calculations, we evaluate the effect of reduced film
thickness on the PDOS. This approach allows us to estimate the changes in superconducting critical temperature
Tc induced by phonon confinement, which turned out to be limited to a few tenths of K. The presented method is
successful for the Nb3Sn system and paves the way for more systematic studies of the role of phonon confinement
in Sn-containing superconductors.
ISSN: 1098-0121
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Nuclear and Radiation Physics Section
Solid State Physics and Magnetism Section
× corresponding author
# (joint) last author

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