Frontiers of Physics in China

, Volume 5, Issue 2, pp 166–170

Magnetic excitations of undoped iron oxypnictides

  • Dao-xin Yao (姚道新)
  • E. W. Carlson
Research Article

Abstract

We study the magnetic excitations of undoped iron oxypnictides using a three-dimensional Heisenberg model with single-ion anisotropy. Analytic forms of the spin-wave dispersion, velocities, and structure factor are given. Aside from quantitative comparisons that can be made to inelastic neutron scattering experiments, we also give qualitative criteria that can distinguish various regimens of coupling strength. The magnetization reduction due to quantum zero point fluctuations shows clear dependence on the c-axis coupling.

Keywords

iron-based superconductor 3-D Heisenberg model spin-wave neutron scattering sublattice mangetization 

PACS numbers

74.25.Ha 74.70.-b 75.30.Ds 76.50.+g 

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Copyright information

© Higher Education Press and Springer Berlin Heidelberg 2010

Authors and Affiliations

  • Dao-xin Yao (姚道新)
    • 1
  • E. W. Carlson
    • 1
  1. 1.Department of PhysicsPurdue UniversityWest LafayetteUSA

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