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Spin Density Wave Induced Disordering of the Vortex Lattice in Superconducting La2-xSrxCu4

Type of publication Peer-reviewed
Publikationsform Original article (peer-reviewed)
Author Chang J, White J. S., Laver M., Bowel C. J., Brown S. P., Holmes A. T., Maecheler L., Sträsle S., Gilardi L., Gerber S., Kurosowa N., Momono N., Oda M., Ido M., Lipscombe O. J., Hayden S. M., Dewhurst C. D., Vavrin R., Gavilano J. L., Kohlbrecher J., Forgan E. M., Mesot J.,
Project Interplay of Magnetism and Superconductivity in Unconventional Superconductors
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Original article (peer-reviewed)

Journal Physical Review B
Volume (Issue) 85(13)
Page(s) 134520-1 - 134520-7
Title of proceedings Physical Review B
DOI 10.1103/PhysRevB.85.134520

Abstract

We use small-angle neutron scattering to study the superconducting vortex lattice in La2−xSrxCuO4 as a function of doping and magnetic field. We show that near optimally doping the vortex lattice coordination and the superconducting coherence length ξ 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
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