Vortex Charges in High Temperature Superconductors

Abstract

Based on an effective model Hamiltonian with competing antiferromagnetic (AF) and d-wave superconductivity (DSC) interactions, the vortex charge in high T_c superconductors is investigated by solving self-consistently the Bogoliubov-de Gennes equations. We found that the vortex charge is always negative when a sufficient strength of AF order is induced inside the vortex core, otherwise, the vortex charge is positive. By tuning the on-site Coulomb repulsion U or the doping parameter $\delta$, a transition between the positive and negative vortex charges may occur. The vortex charge at optimal doping has also been studied as a function of magnetic field. Recent NMR and Hall effect experiments may be understood in terms of the present results. New imaging experiments should be able to probe the vortex charge directly.

4 pages, 3 figures, to be published in PRL

References in corpus (7)

• Discovery of microscopic electronic inhomogeneity in the high-Tc superconductor Bi2Sr2CaCu2O8+x
• Spins in the Vortices of a High Temperature Superconductor
• Spin ordering quantum transitions of superconductors in a magnetic field
• Quasiparticle States at a d-Wave Vortex Core in High-Tc Superconductors: Induction of Local Spin Density Wave Order
• Evidence for Static Magnetism in the Vortex Cores of Ortho-II YBa${}_2$Cu${}_3$O${}_{6.50}$
• Magnetic field induced charge and spin instabilities in cuprate superconductors
• Theory of Magnetic Field Induced Spin Density Wave in High Temperature Superconductors

Cited by in corpus (27)

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• Vortex structure in d-density wave scenario of pseudogap
• Harmonically trapped dipolar fermions in a two-dimensional square lattice
• Antiferromagnetism and charged vortices in high-Tc superconductors
• Coexistence of superconductivity and incommensurate magnetic order
• Vortex State in Na_xCoO_2.yH_2O: p_x\pm ip_y-wave versus d_{x^2-y^2}\pm id_{xy}-wave Pairing
• Method of studying the Bogoliubov-de Gennes equations for the superconducting vortex lattice state
• Superconducting vortex-charge measurement using cavity electromechanics
• Charge Dynamics of Vortex Cores in Layered Chiral Triplet Superconductors
• Hall Effect in the Abrikosov Lattice of Type-II Superconductors
• Vortex-Core Charging Due to the Lorentz Force in a $d$-Wave Superconductor
• Temperature dependence of Vortex Charges in High Temperature Superconductors
• Effects of disorder on the vortex charge
• Recursion method for the quasiparticle structure of a single vortex with induced magnetic order
• Tunneling interstitial impurity in iron-chalcogenide based superconductors
• Charge Induced Vortex Lattice Instability
• Supersolid phases of dipolar fermions in a two-dimensional-lattice bilayer array
• Charging in a Superconducting Vortex Due to the Three Force Terms in Augmented Eilenberger Equations
• Charging due to Pair-Potential Gradient in Vortex of Type-II Superconductors
• Helical instability of charged vortices in layered superconductors
• Orbital-resolved vortex core states in FeSe Superconductors: calculation based on a three-orbital model
• Local enhancement of spin and orbital antiferromagnetism around a single vortex in high-Tc superconductors
• Exploring Exotic Superfluidity of Polarized Ultracold Fermions in Optical Lattices
• Local breaking of the spin degeneracy in the vortex states of Ising superconductors: Induced antiphase ferromagnetic order