Limits on the Curie temperature of ( III , Mn ) V ferromagnetic semiconductors

@inproceedings{Schliemann2001LimitsOT,
  title={Limits on the Curie temperature of ( III , Mn ) V ferromagnetic semiconductors},
  author={John Schliemann and J{\"u}rgen K{\"o}nig and Hsiu-Hau Lin and Allan H. MacDonald},
  year={2001}
}
Mean-field-theory predicts that the Curie temperature Tc of a ~III,Mn !V ferromagnet will be proportional to the valence band density-of-states of its host ~III,V ! semiconductor, suggesting a route toward room-temperature ferromagnetism in this materials class. In this letter, we use theoretical estimates of spin-wave energies and Monte Carlo simulations to demonstrate that long-wavelength collective fluctuations, neglected by mean-field theory, will limit the critical temperature in large… CONTINUE READING