Spin density wave induced disordering of the vortex lattice in superconducting La${}_{2-x}$Sr${}_x$CuO${}_4$

Abstract

We use small angle neutron scattering to study the superconducting vortex lattice in La${}_{2-x}$Sr${}_x$CuO${}_4$ as a function of doping and magnetic field. We show that near optimally doping the vortex lattice coordination and the superconducting coherence length $\xi$ are controlled by a van-Hove singularity crossing the Fermi level near the Brillouin zone boundary. The vortex lattice properties change dramatically as a spin-density-wave instability is approached upon underdoping. The Bragg glass paradigm provides a good description of this regime and suggests that SDW order acts as a novel source of disorder on the vortex lattice.

Accepted in Phys. Rev. B

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Cited by in corpus (5)

• Band Structure of Overdoped Cuprate Superconductors: Density Functional Theory Matching Experiments
• High magnetic field ultrasound study of spin freezing in La${}_{1.88}$Sr${}_{0.12}$CuO${}_4$
• Nodal Landau Fermi-Liquid Quasiparticles in Overdoped La${}_{1.77}$Sr${}_{0.23}$CuO${}_4$
• High magnetic field studies of the Vortex Lattice structure in YBa2Cu3O7
• Evidence for a square-square vortex lattice transition in a high-$T_{\text{c}}$ cuprate superconductor