Spin Transfer Torque Switching in Pentalayer Nanopillar with Biquadratic Coupling

Journal Article · Wed Aug 15 00:00:00 EDT 2018 · Journal of Superconductivity and Novel Magnetism

DOI:https://doi.org/10.1007/S10948-017-4517-3· OSTI ID:22773877

Aravinthan, D., E-mail: [e-mail] ^[1]; Sabareesan, P., E-mail: [e-mail] ^[2]; Daniel, M., E-mail: [e-mail] ^[3]

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1. Bharathidasan University, Centre for Nonlinear Dynamics, School of Physics (India)
2. SASTRA University, Centre for Nonlinear Science and Engineering, School of Electrical and Electronics Engineering (India)
3. SNS Institutions (India)

The effect of biquadratic coupling on spin transfer torque-assisted magnetization switching in the pentalayer nanopillar device is studied by numerically solving the magnetization switching dynamics of the free layer governed by the Landau- Lifshitz-Gilbert-Slonczewski (LLGS) equation. Magnetization switching time in the absence of biquadratic coupling for an applied current density of 10 × 10{sup 11}Am{sup − 2} is 186 ps. Biquadratic coupling arises due to the uncorrelated roughness in the ferromagnetic layers and it reduces the switching time to 160 ps. Further, the impact of the period of roughness and spacer layer thickness on switching time are studied.

• OSTI ID: 22773877
• Journal Information: Journal of Superconductivity and Novel Magnetism, Vol. 31, Issue 8; Other Information: Copyright (c) 2018 Springer Science+Business Media, LLC, part of Springer Nature; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA); ISSN 1557-1939
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CURRENT DENSITY
EQUATIONS
MAGNETIZATION
ROUGHNESS
SPACERS
THICKNESS
TORQUE