Optimization of spin-torque switching using AC and DC pulses

Journal Article · Sat Jun 21 00:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4882757· OSTI ID:22304014

Dunn, Tom ^[1]; Kamenev, Alex ^[1]

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1. Department of Physics, University of Minnesota, Minneapolis, Minnesota 55455 (United States)

We explore spin-torque induced magnetic reversal in magnetic tunnel junctions using combined AC and DC spin-current pulses. We calculate the optimal pulse times and current strengths for both AC and DC pulses as well as the optimal AC signal frequency, needed to minimize the Joule heat lost during the switching process. The results of this optimization are compared against numeric simulations. Finally, we show how this optimization leads to different dynamic regimes, where switching is optimized by either a purely AC or DC spin-current, or a combination AC/DC spin-current, depending on the anisotropy energies and the spin-current polarization.

• OSTI ID: 22304014
• Journal Information: Journal of Applied Physics, Vol. 115, Issue 23; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANISOTROPY
CURRENTS
HEAT
OPTIMIZATION
P-N JUNCTIONS
POLARIZATION
PULSES
SIMULATION
SPIN
TORQUE
TUNNEL EFFECT