TUNNELING VIA INDIVIDUAL ELECTRONIC STATES IN FERROMAGNETIC NANOPARTICLES

@article{Guron1999TUNNELINGVI,
  title={TUNNELING VIA INDIVIDUAL ELECTRONIC STATES IN FERROMAGNETIC NANOPARTICLES},
  author={Sophie Gu{\'e}ron and Mandar M. Deshmukh and Edward B. Myers and Daniel C Ralph},
  journal={Physical Review Letters},
  year={1999},
  volume={83},
  pages={4148-4151}
}
We measure electron tunneling via discrete energy levels in ferromagnetic cobalt particles less than 4 nm in diameter, using non-magnetic electrodes. Due to magnetic anisotropy, the energy of each tunneling resonance shifts as an applied magnetic field rotates the particle's magnetic moment. We see both spin-increasing and decreasing tunneling transitions, but we do not observe the spin degeneracy at small magnetic fields seen previously in non-magnetic materials. The tunneling spectrum is… Expand

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