Hour-glass magnetic excitations induced by nanoscopic phase separation in cobalt oxides.

@article{Drees2014HourglassME,
  title={Hour-glass magnetic excitations induced by nanoscopic phase separation in cobalt oxides.},
  author={Y. Drees and Z. W. Li and Alessandro M. V. Ricci and Martin Rotter and Wolfgang Schmidt and Daniel Lamago and O. V. Sobolev and Uta R{\"u}tt and O. Gutowski and Michael Sprung and Andrea Piovano and John-Paul Castellan and A. C. Komarek},
  journal={Nature communications},
  year={2014},
  volume={5},
  pages={
          5731
        }
}
The magnetic excitations in the cuprate superconductors might be essential for an understanding of high-temperature superconductivity. In these cuprate superconductors the magnetic excitation spectrum resembles an hour-glass and certain resonant magnetic excitations within are believed to be connected to the pairing mechanism, which is corroborated by the observation of a universal linear scaling of superconducting gap and magnetic resonance energy. So far, charge stripes are widely believed to… 
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