Multi-Band Superconductivity

Lead Research Organisation: University of Warwick
Department Name: Physics

Abstract

Superconductivity in unconventional superconductors is often associated with the existence of several band gaps at the Fermi surface. Neutron SAS is an ideal experiment to examine such effects since the Bragg reflections from the ordered vortex state are sensitive to this characteristic as a function of applied magnetic field and temperature. Control of this feature can also be obtained by applying an external pressure. We have performed a number of neutron SAS measurements on this state at ambient pressure but no-one has yet attempted such measurements under an applied pressure. We believe from our previous experiments that it should now be possible to successfully perform such measurements. Such work is ideal for the training of a research student as it contains aspects of crystal growth, sample characterisation, neutron SAS experiments and data analysis.

Publications

10 25 50

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Smidman M (2012) Is CeCoSi 3 a superconductor? in Journal of Physics: Conference Series

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Singh R (2012) Crystal growth of the non-centrosymmetric superconductor Nb0.18Re0.82 in Journal of Crystal Growth

 
Description Development of understanding of the existence of different forms of superconductivity by muon and neutron diffraction experiments. Pressure studies have reached initail stage nand look promising
Exploitation Route Experimental experience developed will be used to study skyrmions, application of a Programme grant submitted 2016.
Pressure work successful and will be expanded in the future.
Muon work has developed Elemental analysis techniques for negative muons.
Sectors Digital/Communication/Information Technologies (including Software),Electronics,Culture, Heritage, Museums and Collections,Other

 
Description ISIS Collaboration for Muon Studies 
Organisation Rutherford Appleton Laboratory
Country United Kingdom 
Sector Public 
PI Contribution Access by proposal to the Muon Instrumentation at ISIS
Collaborator Contribution Scientific collaboration and discussion
Impact Development of data analysis techniques Lead to a possible impactful programme on the use of Negative Muon for Elemental Analysis for Archaeometry, Engineering and Biology from discussions based on the experiments
Start Year 2008