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Can topological transitions be exploited to engineer intrinsically quench-resistant wires?

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Whittlesea_2017_IEEE_TAS_TopologicalTransitions_AAM.pdf (242.3Kb)
Date
01/06/2018
Author
Whittlesea, Philip
Quintanilla, Jorge
Annett, James F.
Hillier, Adrian D.
Hooley, Chris
Keywords
Energy dissipation
Superconducting filaments and wires
Superconducting magnetic energy storage
Superconducting magnets
Waste heat
QC Physics
TK Electrical engineering. Electronics Nuclear engineering
Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering
NDAS
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Abstract
In this paper, we investigate whether by synthesizing superconductors that are tuned to a topological, node-reconstruction transition point, we could create superconducting wires that are intrinsically resilient to quenches. Recent work shows that the exponent characterizing the temperature dependence of the specific heat of a nodal superconductor is lowered over a region of the phase diagram near topological transitions where nodal lines form or reconnect. Our idea is that the resulting enhancement of the low-temperature specific heat could have a potential application in the prevention of superconductor quenches. We perform numerical simulations of a simplified superconductor quench model. Results show that decreasing the specific heat exponent can prevent a quench from occurring and improve quench resilience, though in our simple model the effects are small. Further work will be necessary to establish the practical feasibility of this approach.
Citation
Whittlesea , P , Quintanilla , J , Annett , J F , Hillier , A D & Hooley , C 2018 , ' Can topological transitions be exploited to engineer intrinsically quench-resistant wires? ' , IEEE Transactions on Applied Superconductivity , vol. 28 , no. 4 , 8252800 . https://doi.org/10.1109/TASC.2018.2791515
Publication
IEEE Transactions on Applied Superconductivity
Status
Peer reviewed
DOI
https://doi.org/10.1109/TASC.2018.2791515
ISSN
1051-8223
Type
Journal article
Rights
© 2018 IEEE. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1109/TASC.2018.2791515
Description
This work was supported by EPSRC through the project “Unconventional superconductors: New paradigms for new materials” under Grant EP/P00749X/1 and Grant EP/P007392/1. The work of P. Whittlesea was supported by a University of Kent 50th Anniversary Scholarship. The work of J. Quintanilla was supported by a SEPnet Fellowship held during the early stages of this work.
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  • University of St Andrews Research
URL
https://arxiv.org/abs/1712.02771
URI
http://hdl.handle.net/10023/12937

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