Spin-transfer-driven ferromagnetic resonance of individual nanomagnets.

  title={Spin-transfer-driven ferromagnetic resonance of individual nanomagnets.},
  author={J. C. Sankey and Patrick M Braganca and Andrei G. F. Garcia and I. N. Krivorotov and Robert A. Buhrman and Daniel C Ralph},
  journal={Physical review letters},
  volume={96 22},
We demonstrate a technique that enables ferromagnetic resonance measurements of the normal modes for magnetic excitations in individual nanoscale ferromagnets, smaller in volume by more than a factor of 50 compared to individual ferromagnetic samples measured by other resonance techniques. Studies of the resonance frequencies, amplitudes, linewidths, and line shapes as a function of microwave power, dc current, and magnetic field provide detailed new information about the exchange, damping, and… CONTINUE READING

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