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

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.

Replaced with a version in print in Physical Review B; Improved and extended as compared to the first version; 13 pages; 12 figures

References in corpus (14)

• Deconfined criticality, runaway flow in the two-component scalar electrodynamics and weak first-order superfluid-solid transitions
• Chiral CP^2 skyrmions in three-band superconductors
• Two-fluid models of superfluid neutron star cores
• Jewels on a wall ring
• Flux tubes and the type-I/type-II transition in a superconductor coupled to a superfluid
• Non-Meissner electrodynamics and knotted solitons in two-component superconductors
• Vortex coalescence and type-1.5 superconductivity in Sr2RuO4
• Preemptive vortex-loop proliferation in multicomponent interacting Bose--Einstein condensates
• Superfluid drag of two-species Bose-Einstein condensates in optical lattices
• Unusual states of vortex matter in mixtures of Bose--Einstein Condensates on rotating optical lattices
• Fractional vortex lattice structures in spin triplet superconductors
• Investigation of the stability of Hopfions in the two-component Ginzburg-Landau model
• Hidden vortex lattices in a thermally paired superfluid
• Elasticity and melting of skyrmion flux lattices in p-wave superconductors

Cited by in corpus (21)

• Chiral Magnetic Skyrmions with Arbitrary Topological Charge ("skyrmionic sacks")
• Nematic Skyrmions in Odd-Parity Superconductors
• Direct Observation of Attractive Skyrmions and Skyrmion Clusters in the Cubic Helimagnet Cu${}_2$OSeO${}_3$
• Andreev-Bashkin effect in superfluid cold gases mixture
• Ground state, collective mode, phase soliton and vortex in multiband superconductors
• Microscopic prediction of skyrmion lattice state in clean interface superconductors
• Superfluid drag in the two-component Bose-Hubbard model
• Quantum Gutzwiller approach for the two-component Bose-Hubbard model
• Multiple-q current states in a multicomponent superconducting channel
• Towards an effective theory of skyrmion crystals
• Kelvin knots in superconducting state
• Dynamical stability of the Holographic System with Two Competing Orders
• Vortex chains due to nonpairwise interactions and field-induced phase transitions between states with different broken symmetry in superconductors with competing order parameters
• Effective model and Magnetic Properties of the Resistive Electron Quadrupling State
• Topological defects in mixtures of superconducting condensates with different charges
• Magnon spectrum in ferromagnets with a skyrmion
• Baby Skyrmion in two-component holographic superfluids
• Interaction between multi components vortices at arbitrary distances using a variational method in the Ginzburg-Landau theory
• Different Electronic Charges in Two-Component Superconductor by Coherent State
• Drag-induced dynamical formation of dark solitons in Bose mixture on a ring
• Vortex nucleation barriers and stable fractional vortices near boundaries in multicomponent superconductors