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

Whittlesea, Philip, Quintanilla, Jorge, Annett, James, Hillier, Adrian, Hooley, Chris (2018) Can topological transitions be exploited to engineer intrinsically quench-resistant wires? IEEE Transactions on Applied Superconductivity, 28 (4). ISSN 1051-8223. (doi:10.1109/TASC.2018.2791515)

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Abstract

We investigate whether by synthesising 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 characterising 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 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.

Item Type: Article
DOI/Identification number: 10.1109/TASC.2018.2791515
Projects: [UNSPECIFIED] Unconventional supercon- ductors: New paradigms for new materials
Uncontrolled keywords: Physics of Quantum Materials, superconductor, quench, condensed matter, topology, unconventional pairing
Subjects: Q Science > QC Physics > QC173.45 Condensed Matter
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Jorge Quintanilla
Date Deposited: 11 Jan 2018 16:57 UTC
Last Modified: 14 Feb 2020 04:10 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/65716 (The current URI for this page, for reference purposes)
Quintanilla, Jorge: https://orcid.org/0000-0002-8572-730X
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