New magnetic coherence effect in superconducting La_{2-x}Sr_{x}CuO_{4}

T. E. Mason; A. Schroder; G. Aeppli; H. A. Mook; S. M. Hayden

doi:10.1103/PhysRevLett.77.1604

New magnetic coherence effect in superconducting La_{2-x}Sr_{x}CuO_{4}

Condensed Matter 2009-10-28 v2

Authors: T. E. Mason , A. Schroder , G. Aeppli , H. A. Mook , S. M. Hayden

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

We have used inelastic neutron scattering to examine the magnetic fluctuations at intermediate frequencies in the simplest high temperature superconductor, La_{2-x}Sr_{x}Cu_{4}. The suppression of the low energy magnetic response in the superconducting state is accompanied by an increase in the response at higher energies. Just above a threshold energy of ~7 meV there is additional scattering present below T_{c} which is characterised by an extraordinarily long coherence length, in excess of 50 \AA.

Keywords

high temperature superconductor magnetic fluctuations inelastic neutron scattering coherence length La2-xSrxCuO4

Cite

@article{arxiv.cond-mat/9606084,
  title  = {New magnetic coherence effect in superconducting La_{2-x}Sr_{x}CuO_{4}},
  author = {T. E. Mason and A. Schroder and G. Aeppli and H. A. Mook and S. M. Hayden},
  journal= {arXiv preprint arXiv:cond-mat/9606084},
  year   = {2009}
}

Comments

11 pages, RevTeX, 4 postscript figures

Related papers

View all related →