CORUSCANT: Fast Efficient Processing-in-Racetrack Memories

Ollivier, Sébastien; Longofono, Stephen; Dutta, Prayash; Hu, Jingtong; Bhanja, Sanjukta; Jones, Alex K.

doi:10.1109/micro56248.2022.00060

Cited by 8 publications

(1 citation statement)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The use of a spin-polarized electron flow and its resulting torques on magnetic textures has been demonstrated for driving DWs in magnetic wires [2]. New generations of devices have been proposed based on these effects, such as the so-called magnetic racetracks that can be used as storage-class memories [3,4] or for novel forms of information processing [5][6][7]. In this type of technology, a stream of bits is encoded as a series of domains separated by DWs in a magnetic nanowire, which can be shifted along the wire using electrical current pulses by means of the spin-torque mechanism.…”

Section: Introductionmentioning

confidence: 99%

Domain wall motion at low current density in a synthetic antiferromagnet nanowire

Finizio

Haltz

et al. 2023

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

The current-driven motion of magnetic domain walls (DWs) is the working principle of magnetic racetrack memories. In this type of spintronic technology, high current densities are used to propel DW motion in magnetic nanowires, causing significant wire heating that corresponds to wasted energy. Synthetic antiferromagnets are known to show very fast DW motion at high current densities, but lower current densities around onset of motion have received less attention. Here we use scanning transmission x-ray microscopy to study the response of DWs in a SAF multilayer to short current pulses. We observe that the DWs depin at $(3.5 \pm 0.4) \times 10^{11}$~A/m$^2$ and move more quickly in response to 5~ns duration current pulses than in comparable multilayers that lack antiferromagnetic coupling. The results suggest that DWs in SAF structures are superior to conventional N'{e}el DWs for low energy consumption racetrack technologies.

show abstract