Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Kaka, Shehzaad"'
Autor:
Ye, Longfei, Garzon, Samir, Webb, Richard A., Covington, Mark, Kaka, Shehzaad, Crawford, Thomas M.
Combining multiple ultrafast spin torque impulses with a 5 nanosecond duration pulse for damping reduction, we observe time-domain precession which evolves from an initial 1 ns duration transient with changing precessional amplitude to constant ampli
Externí odkaz:
http://arxiv.org/abs/0908.0481
In large magnetoresistance devices spin torque-induced changes in resistance can produce GHz current and voltage oscillations which can affect magnetization reversal. In addition, capacitive shunting in large resistance devices can further reduce the
Externí odkaz:
http://arxiv.org/abs/0904.4159
Autor:
Garzon, Samir, Bazaliy, Yaroslaw, Webb, Richard A., Crawford, Thomas M., Covington, Mark, Kaka, Shehzaad
Publikováno v:
Phys. Rev. B 79, 100402 (2009)
We show that the absence of pre-switching oscillations ("incubation delay") in magnetic tunnel junctions can be explained within the macrospin model by a sizable field-like component of the spin-transfer torque. It is further suggested that measureme
Externí odkaz:
http://arxiv.org/abs/0810.3421
Autor:
Garzon, Samir, Ye, Longfei, Webb, Richard A., Crawford, Thomas M., Covington, Mark, Kaka, Shehzaad
Publikováno v:
Phys. Rev. B 78, 180401 (2008)
The magnetization orientation of a nanoscale ferromagnet can be manipulated using an electric current via the spin transfer effect. Time domain measurements of nanopillar devices at low temperatures have directly shown that magnetization dynamics and
Externí odkaz:
http://arxiv.org/abs/0806.2297
Autor:
Kaka, Shehzaad, Pufall, Matthew, Rippard, William, Silva, Thomas, Russek, Stephen, Katine, Jordan, Carey, Matthew
Spin valve nanopillars are reversed via the mechanism of spin momentum transfer using current pulses applied perpendicular to the film plane of the device. The applied pulses were varied in amplitude from 1.8 mA to 7.8 mA, and varied in duration with
Externí odkaz:
http://arxiv.org/abs/cond-mat/0411363
Autor:
Pufall, Matthew R., Rippard, William H., Kaka, Shehzaad, Russek, Steven E., Silva, Thomas J., Katine, Jordan, Carey, Matt
We show that spin-polarized dc current passing through a small magnetic element induces two-state, random telegraph switching of the magnetization via the spin-momentum transfer effect. The resistances of the states differ by up to 50% of the change
Externí odkaz:
http://arxiv.org/abs/cond-mat/0404109
Autor:
Kaka, Shehzaad *, Pufall, Matthew R., Rippard, William H., Silva, Thomas J., Russek, Stephen E., Katine, Jordan A., Carey, Matthew
Publikováno v:
In Journal of Magnetism and Magnetic Materials February 2005 286:375-380
Autor:
Kaka, Shehzaad1 shehzu21@gmail.com, Pufall, Matthew R.1, Rippard, William H.1, Silva, Thomas J.1, Russek, Stephen E.1, Katine, Jordan A.2
Publikováno v:
Nature. 9/15/2005, Vol. 437 Issue 7057, p389-392. 4p.
Publikováno v:
Journal of Applied Physics; 5/15/2003, Vol. 93 Issue 10, p7539, 6p, 8 Graphs
Autor:
Kaka, Shehzaad, Russek, Stephen
Publikováno v:
Journal of Applied Physics; 5/1/2000, Vol. 87 Issue 9, p6391, 3p