Journal article · Preprint article
Spin density wave induced disordering of the vortex lattice in superconducting La2−xSrxCuO4
Paul Scherrer Institute1
Ecole Polytechnique Fedederale de Lausanne (EPFL)2
Niels Bohr Institutet3
University of Birmingham4
Physik-Institut der Universitat Zurich5
Niels Bohr Institute, Faculty of Science, Københavns Universitet6
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. 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 spin-density-wave order acts as a source of disorder on the vortex lattice.
Language: | English |
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Publisher: | American Physical Society (APS) |
Year: | 2012 |
ISSN: | 1550235x , 10980121 and 24699950 |
Types: | Journal article and Preprint article |
DOI: | 10.1103/PhysRevB.85.134520 |