Charge Induced Vortex Lattice Instability

Abstract

It has been predicted that superconducting vortices should be electrically charged and that this effect is particularly enhanced for, high temperature superconductors.\cite{kho95,bla96} Hall effect\cite{hag91} and nuclear magnetic resonance (NMR) experiments\cite{kum01} suggest the existence of vortex charging, but the effects are small and the interpretation controversial. Here we show that the Abrikosov vortex lattice, characteristic of the mixed state of superconductors, will become unstable at sufficiently high magnetic field if there is charge trapped on the vortex core. Our NMR measurements of the magnetic fields generated by vortices in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+y}$ single crystals\cite{che07} provide evidence for an electrostatically driven vortex lattice reconstruction with the magnitude of charge on each vortex pancake of $\sim 2$x$10^{-3}\mathbf{e}$, depending on doping, in line with theoretical estimates.\cite{kho95,kna05}

to appear in Nature Physics; 6 pages, 7 figures

References in corpus (6)

• Electron pockets in the Fermi surface of hole-doped high-Tc superconductors
• Two-dimensional Vortices in Superconductors
• Development of high critical current density in multifilamentary round-wire Bi2Sr2CaCu2O8+x by strong overdoping
• Antiferromagnetism and charged vortices in high-Tc superconductors
• Charge Dynamics of Vortex Cores in Layered Chiral Triplet Superconductors
• Helical instability of charged vortices in layered superconductors

Cited by in corpus (6)

• ${}^{75}$As NMR of Ba(Fe${}_{0.93}$Co${}_{0.07}$)${}_2$As${}_2$ in High Magnetic Field
• Superconducting vortex-charge measurement using cavity electromechanics
• Hall Effect in the Abrikosov Lattice of Type-II Superconductors
• Evolution of dissipative regimes in atomically thin ${\text{Bi}}_2{\text{Sr}}_2{\text{CaCu}}_2{\text{O}}_{8+x}$ superconductor
• Force-free state in a superconducting single crystal and angle-dependent vortex helical instability
• Magnetic Field Induced Vortex Lattice Transition in HgBa${}_2$CuO${}_{4+\delta }$