Zero Field precession and hysteretic threshold currents in spin torque oscillators with tilted polarizer

Details Zero Field precession and hysteretic threshold currents in spin torque oscillators with tilted polarizer Zero Field precession and hysteretic threshold currents in spin torque oscillators with tilted polarizer

2008-09-16

arxiv.org/abs/0809.2763v1

Physics

Condensed Matter

Materials Science

5 pages, 4 figures

Scientific paper

Using non-linear system theory and numerical simulations we map out the static and dynamic phase diagram in zero applied field of a spin torque oscillator with a tilted polarizer (TP-STO).We find that for sufficiently large currents, even very small tilt angles (beta>1 degree) will lead to steady free layer precession in zero field. Within a rather large range of tilt angles, 1 degree< beta <19 degree, we find coexisting static states and hysteretic switching between these using only current. In a more narrow window (1 degree

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