Can topological transitions be exploited to engineer intrinsically quench-resistant wires?
MetadataShow full item record
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.
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
IEEE Transactions on Applied Superconductivity
DescriptionThis 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.
Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.