Toroflux: A counterpart of the Chandrasekhar-Kendall state in noncentrosymmetric superconductors - Archive ouverte HAL Access content directly
Journal Articles Physical Review B Year : 2023

Toroflux: A counterpart of the Chandrasekhar-Kendall state in noncentrosymmetric superconductors

Abstract

We demonstrate that superconductors with broken inversion symmetry support a family of stable, spatially localized configurations of the self-knotted magnetic field. These solutions, that we term "toroflux", are the superconducting counterparts of the Chandrasekhar-Kendall states (spheromaks) that appear in highly conducting, force-free astrophysical and nuclear-fusion plasmas. The superconducting torofluxes are solutions of superconducting models, in the presence of a parity breaking Lifshitz invariant associated with the $O$ point group symmetry. We demonstrate that a magnetic dipole or a ferromagnetic inclusion in the bulk of a noncentrosymmetric superconductor source finite-energy toroflux solutions.
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Dates and versions

hal-03753845 , version 1 (18-08-2022)

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Julien Garaud, Anatolii Korneev, Albert Samoilenka, Alexander Molochkov, Egor Babaev, et al.. Toroflux: A counterpart of the Chandrasekhar-Kendall state in noncentrosymmetric superconductors. Physical Review B, 2023, 108 (1), pp.014504. ⟨10.1103/PhysRevB.108.014504⟩. ⟨hal-03753845⟩
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