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Spin Torque with Point Contacts: Generating Nonlinear Waves with Magnetic Media in a Localized Way

Published

Author(s)

Thomas J. Silva

Abstract

Spin torque offers new means to locally excite nonlinear dynamics in magnets. Possible applications include oscillators, disk drive heads, and non-volatile memory. Theoretical analysis is made challenging by the inherent difficulties of stiff differential equations with non-local terms. Originally formulated in 1999, analysis of the nonlinear Landau-Lifshitz-Slonczewski equation has proceeded either by perturbative amplitude expansion or brute force micromagnetic simulations. I will survey the current state-of-the-art, with an emphasis on efforts to accelerate simulation algorithms for infinite domains, and analysis of a novel magnetic excitation: the magnon 'droplet'.
Citation
SIAM Conference on Nonlinear Waves 2010 (NW10)

Citation

Silva, T. (2010), Spin Torque with Point Contacts: Generating Nonlinear Waves with Magnetic Media in a Localized Way, SIAM Conference on Nonlinear Waves 2010 (NW10), [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=906628, http://www.siam.org/meetings/nw10/invited.php (Accessed June 9, 2023)
Created August 16, 2010, Updated June 2, 2021