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arXiv · 1307.3211

Skyrmions induced by dissipationless drag in U(1)xU(1) superconductors

Julien Garaud·Karl A. H. Sellin·Juha Jäykkä·Egor Babaev
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Abstract

Rather generically, multicomponent superconductors and superfluids have intercomponent current-current interaction. We show that in superconductors with substantially strong intercomponent drag interaction, the topological defects which form in external field are characterized by a skyrmionic topological charge. We then demonstrate that they can be distinguished from ordinary vortex matter by a very characteristic magnetization process due to the dipolar nature of inter-skyrmion forces. The results provide an experimental signature to confirm or rule out the formation $p$-wave state with reduced spin stiffness in $p$-wave superconductors.

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Julien Garaud, Karl A. H. Sellin, Juha Jäykkä, Egor Babaev. 2013-07-11. Skyrmions induced by dissipationless drag in U(1)xU(1) superconductors. https://doi.org/10.1103/physrevb.89.104508

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