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Chiral p -wave superconductors have complex coherence and magnetic field penetration lengths

Speight, Martin, Winyard, Thomas, Babaev, Egor (2019) Chiral p -wave superconductors have complex coherence and magnetic field penetration lengths. Physical Review B, 100 (17). Article Number 174514. ISSN 2469-9950. (doi:10.1103/PhysRevB.100.174514) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:90780)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL:
https://doi.org/10.1103/PhysRevB.100.174514

Abstract

We show that in superconductors that break time-reversal symmetry and have anisotropy, such as p + ip materials, all order parameters and magnetic modes are mixed. Excitation of the gap fields produces an excitation of the magnetic field and vice versa. Correspondingly, the long-range decay of the magnetic field and order parameter is in general given by the same exponent. Thus, one cannot characterize p + ip superconductors by the usual coherence and magnetic field penetration lengths. Instead, the system has normal modes that are associated with linear combinations of magnetic fields, moduli of and phases of the order-parameter components. Each such normal mode has its own decay length that plays the role of a hybridized coherence/magnetic field penetration length. On a large part of the parameter space, these exponents are complex. Therefore, the system in general has damped oscillatory decay of the magnetic field accompanied by damped oscillatory variation of the order-parameter fields.

Item Type: Article
DOI/Identification number: 10.1103/PhysRevB.100.174514
Uncontrolled keywords: Coherence length; Meissner effect; Multiband superconductivity; Superconducting order parameter; Superconductivity; p-wave
Subjects: Q Science > QC Physics > QC20 Mathematical Physics
Divisions: Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Mathematics, Statistics and Actuarial Science
Depositing User: Amy Boaler
Date Deposited: 11 Oct 2021 09:44 UTC
Last Modified: 05 Nov 2024 12:56 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/90780 (The current URI for this page, for reference purposes)

University of Kent Author Information

Winyard, Thomas.

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