Room-Temperature Skyrmions at Zero Field in Exchange-Biased Ultrathin Films

  title={Room-Temperature Skyrmions at Zero Field in Exchange-Biased Ultrathin Films},
  author={K. G. Rana and A. Finco and F. Fabre and S. Chouaieb and A. Haykal and L. Buda-Prejbeanu and O. Fruchart and S. Le Denmat and P. David and M. Belmeguenai and T. Denneulin and R. Dunin-Borkowski and G. Gaudin and V. Jacques and O. Boulle},
  journal={arXiv: Materials Science},
We demonstrate that magnetic skyrmions with a mean diameter around 60 nm can be stabilized at room temperature and zero external magnetic field in an exchange-biased Pt/Co/NiFe/IrMn multilayer stack. This is achieved through an advanced optimization of the multilayer stack composition in order to balance the different magnetic energies controlling the skyrmion size and stability. Magnetic imaging is performed both with magnetic force microscopy and scanning Nitrogen-Vacancy magnetometry, the… Expand

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