The dependence of the linewidth on the temperature and the applied magnetic field angle is studied in spin torque nano-oscillators (STNO) by means of full micromagnetic simulations. Linewidth behavior increases with the temperature in agreement with the analytical predictions by Tiberkevic et al. [Phys. Rev. B, 78, 092401 (2008)] and its slope depends on the applied field angle. Also, the nonlinear frequency shift coefficient, which gives a measure of the nonlinearity degree of STNO and indicates the strength of the transformation of amplitude into phase fluctuations, is found
Micromagnetic simulations of linewidth and nonlinear frequency shift coefficient in spin-torque nanoscillators / Carpentieri, Mario; Cardelli, E; Faba, A; Torres, L.. - paper #1710(2010). (Intervento presentato al convegno Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation, CEFC 2010 tenutosi a Chicago, IL, USA nel May 9-12, 2010) [10.1109/CEFC.2010.5481616].
Micromagnetic simulations of linewidth and nonlinear frequency shift coefficient in spin-torque nanoscillators
CARPENTIERI, Mario;
2010-01-01
Abstract
The dependence of the linewidth on the temperature and the applied magnetic field angle is studied in spin torque nano-oscillators (STNO) by means of full micromagnetic simulations. Linewidth behavior increases with the temperature in agreement with the analytical predictions by Tiberkevic et al. [Phys. Rev. B, 78, 092401 (2008)] and its slope depends on the applied field angle. Also, the nonlinear frequency shift coefficient, which gives a measure of the nonlinearity degree of STNO and indicates the strength of the transformation of amplitude into phase fluctuations, is foundI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
