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Anomalous thermodynamic power laws near topological transitions in nodal superconductors

Mazidian, Bayan, Quintanilla, Jorge, Hillier, Adrian D, Annett, James F (2013) Anomalous thermodynamic power laws near topological transitions in nodal superconductors. Physical Review B: Condensed Matter and Materials Physics, 88 (22). p. 224504. ISSN 0163-1829. (doi:10.1103/PhysRevB.88.224504)

Abstract

Unconventional superconductors are most frequently identified by the observation of power-law behavior on low-temperature thermodynamic or transport properties, such as specific heat. Here, we show that, in addition to the usual point and line nodes, a much wider class of different nodal types can occur. These new types of nodes typically occur when there are transitions between different types of gap node topology, for example, when point or line nodes first appear as a function of some physical parameter. We identify anomalous, noninteger thermodynamic power laws associated with these new nodal types, and give physical examples of superconductors in which they might be observed experimentally, including the noncentrosymmetric superconductor Li2Pd3?xPtxB.

Item Type: Article
DOI/Identification number: 10.1103/PhysRevB.88.224504
Uncontrolled keywords: Physics of Quantum Materials, 74.25.Bt, 74.20.Rp, 74.25.Jb, 74.70.Tx
Subjects: Q Science
Q Science > QC Physics
Q Science > QC Physics > QC174.12 Quantum theory
Divisions: Faculties > Sciences > School of Physical Sciences
Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Jorge Quintanilla
Date Deposited: 13 Dec 2013 12:59 UTC
Last Modified: 17 Jul 2019 08:56 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/37614 (The current URI for this page, for reference purposes)
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