Electron-hole symmetry and magnetic coupling in antiferromagnetic LaFeAsO.

  title={Electron-hole symmetry and magnetic coupling in antiferromagnetic LaFeAsO.},
  author={Zhiping Yin and S{\'e}bastien Leb{\`e}gue and M. J. Han and Brian P. Neal and Sergey Yu. Savrasov and Warren E Pickett},
  journal={Physical review letters},
  volume={101 4},
When either electron or hole doped at concentrations x approximately 0.1, the LaFeAsO family displays remarkably high temperature superconductivity with Tc up to 55 K. In the most energetically stable Q-->M=(pi,pi,0) antiferromagnetic (AFM) phase comprised of tetragonal-symmetry breaking alternating chains of aligned spins, there is a deep pseudogap in the Fe 3d states centered at the Fermi energy arising from light carriers (m* approximately 0.25-0.33), and very strong magnetophonon coupling… 
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