Zobrazeno 1 - 10
of 122
pro vyhledávání: '"Ozatay, O."'
Autor:
Siracusano, G., Giordano, R. Tomasello A., Puliafito, V., Azzerboni, B., Ozatay, O., Carpentieri, M., Finocchio, G.
Publikováno v:
Phys. Rev. Lett. 117, 087204 (2016)
Solitons are very promising for the design of next generation of ultralow power devices for storage and computation. The key ingredient to achieve this goal is the fundamental understanding of their stabilization and manipulation. Here, we show how t
Externí odkaz:
http://arxiv.org/abs/1602.00153
We study, both experimentally and by numerical modeling, the magnetic dynamics that can be excited in a magnetic thin-film nanopillar device using the spin torque from a spatially localized current injected via a 10s-of-nm-diameter aperture. The curr
Externí odkaz:
http://arxiv.org/abs/0807.4660
We have measured the critical phase change conditions induced by electrical pulses in Ge2Sb2Te5 nanopillar phase change memory devices by constructing a comprehensive resistance map as a function of pulse parameters (width, amplitude and trailing edg
Externí odkaz:
http://arxiv.org/abs/0804.4485
The impact of radiofrequency (rf) currents on the direct current (dc) driven switching dynamics in current-perpendicular-to-plane nanoscale spin valves is demonstrated. The rf currents dramatically alter the dc driven free layer magnetization reversa
Externí odkaz:
http://arxiv.org/abs/0803.3791
Autor:
Thadani, K. V., Finocchio, G., Li, Z. -P., Ozatay, O., Sankey, J. C., Krivorotov, I. N., Cui, Y. -T., Buhrman, R. A., Ralph, D. C.
Publikováno v:
Phys. Rev. B 78, 024409 (2008)
We measure the microwave signals produced by spin-torque-driven magnetization dynamics in patterned magnetic multilayer devices at room temperature, as a function of the angle of a magnetic field applied in the sample plane. We find strong variations
Externí odkaz:
http://arxiv.org/abs/0803.2871
We examine the effect a spatially non-uniform spin current with a component polarized partially out of the plane has on a low saturation magnetization nanomagnet free layer. Micromagnetic simulations indicate that the spin torque efficiency acting up
Externí odkaz:
http://arxiv.org/abs/0711.2479
Autor:
Fuchs, G. D., Sankey, J. C., Pribiag, V. S., Qian, L., Braganca, P. M., Garcia, A. G. F., Ryan, E. M., Li, Zhi-Pan, Ozatay, O., Ralph, D. C., Buhrman, R. A.
We measure the magnetic damping parameter a in thin film CoFeB and permalloy (Py) nanomagnets at room temperature using ferromagnetic resonance driven by microwave frequency spin-transfer torque. We obtain $\alpha_{CoFeB} = 0.014 \pm 0.003$ and $\alp
Externí odkaz:
http://arxiv.org/abs/cond-mat/0703577
Autor:
Pribiag, V. S., Krivorotov, I. N., Fuchs, G. D., Braganca, P. M., Ozatay, O., Sankey, J. C., Ralph, D. C., Buhrman, R. A.
Publikováno v:
Nature Physics 3, 498 - 503 (2007)
Transfer of angular momentum from a spin-polarized current to a ferromagnet provides an efficient means to control the dynamics of nanomagnets. A peculiar consequence of this spin-torque, the ability to induce persistent oscillations of a nanomagnet
Externí odkaz:
http://arxiv.org/abs/cond-mat/0702253
Autor:
Emley, N. C., Krivorotov, I. N., Garcia, A. G. F., Ozatay, O., Sankey, J. C., Ralph, D. C., Buhrman, R. A.
We report time-resolved measurements of current-induced reversal of a free magnetic layer in Py/Cu/Py elliptical nanopillars at temperatures T = 4.2 K to 160 K. Comparison of the data to Landau-Lifshitz-Gilbert macrospin simulations of the free layer
Externí odkaz:
http://arxiv.org/abs/cond-mat/0510798
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