ISIS Neutron and Muon Source Data Journal

The Effect of Electron-Phonon Coupling on the Nuclear Dynamics of Superconductors

Abstract: We request beam time on VESUVIO spectrometer in order to characterise the effect of electron-phonon coupling on the nuclear dynamics of superconductors. This proposal is motivated by recent experimental evidence of a broadening of Niobium momentum distribution (and increase in the mean kinetic energy) when a Niobium slab is cooled below the critical temperature (9.2 K). In order to investigate the sensitivity of VESUVIO to the effect of electron-phonon coupling in superconductors, and to clarify if the observed mechanism is a general one, we propose to measure the momentum distribution of several superconductors across superconducting phase transition. In particular, we want to measure two elemental superconductors, Vanadium and Tantalum (having the same bcc structure of Niobium and belong to the same group in the periodic table), and two Niobium-based superconductors, Nb3Sn and Nb3Al.

Principal Investigator: Professor Giovanni Romanelli
Experimenter: Dr Leonardo Bernasconi
Experimenter: Dr Matthew Krzystyniak

DOI: 10.5286/ISIS.E.RB1620445

ISIS Experiment Number: RB1620445

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Professor Giovanni Romanelli et al; (2016): The Effect of Electron-Phonon Coupling on the Nuclear Dynamics of Superconductors, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1620445

Data is released under the CC-BY-4.0 license.