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Temperature Dependence of Microwave Nano-Oscillator Linewidths Driven by Spin-Polarized Currents: A Micromagnetic Analysis

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3 Author(s)
Mario Carpentieri ; Dept. of Elettron., Inf. e Sist., Univ. of Calabria, Cosenza, Italy ; Luis Torres ; Eduardo Martinez

The dependence of the linewidth on the temperature in a spin valve driven by spin-polarized currents is analyzed by means of full micromagnetic simulations. The results are compared to the recent analytical predictions by Tiberkevic and confirmed by the experiments of Boone In agreement with the Tiberkevic theory and experiments of Sankey , our micromagnetic results point out two regimes. The linewidth increases linearly with the temperature until a threshold value, above which a square root dependence is observed.

Published in:

IEEE Transactions on Magnetics  (Volume:45 ,  Issue: 10 )