Quantum computing on magnetic racetracks with flying domain wall qubits

Zou, Ji; Bosco, Stefano; Pal, Banabir; Parkin, Stuart S. P.; Klinovaja, Jelena; Loss, Daniel

doi:10.1103/physrevresearch.5.033166

Cited by 13 publications

(1 citation statement)

References 79 publications

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“…Furthermore, it was found that domain walls in ferrimagnets exhibit high velocities at the angular momentum compensation temperature, where they undergo a transition from a ferromagnetic (FM) to an antiferromagnetic (AFM) state while maintaining a nonzero net magnetic moment, enabling a reliable detection 51 – 54 . The RT architecture was proposed for quantum computing, utilizing DWs as flying qubits 55 . The manipulation and transfer of information stored in the chirality of the DWs can be achieved by shuttling the qubits along the racetrack.…”

Section: Introductionmentioning

confidence: 99%

Self-assembly of Co/Pt stripes with current-induced domain wall motion towards 3D racetrack devices

Fedorov,

Soldatov,

Neu

et al. 2024

Nat Commun

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Modification of the magnetic properties under the induced strain and curvature is a promising avenue to build three-dimensional magnetic devices, based on the domain wall motion. So far, most of the studies with 3D magnetic structures were performed in the helixes and nanowires, mainly with stationary domain walls. In this study, we demonstrate the impact of 3D geometry, strain and curvature on the current-induced domain wall motion and spin-orbital torque efficiency in the heterostructure, realized via a self-assembly rolling technique on a polymeric platform. We introduce a complete 3D memory unit with write, read and store functionality, all based on the field-free domain wall motion. Additionally, we conducted a comparative analysis between 2D and 3D structures, particularly addressing the influence of heat during the electric current pulse sequences. Finally, we demonstrated a remarkable increase of 30% in spin-torque efficiency in 3D configuration.

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Section: Introductionmentioning

confidence: 99%

Self-assembly of Co/Pt stripes with current-induced domain wall motion towards 3D racetrack devices

Fedorov,

Soldatov,

Neu

et al. 2024

Nat Commun

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Topological Spin Textures: Basic Physics and Devices

Zhou,

Li,

Liang

et al. 2024

Advanced Materials

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In the face of escalating modern data storage demands and the constraints of Moore's Law, exploring spintronic solutions, particularly the devices based on magnetic skyrmions, has emerged as a promising frontier in scientific research. Since the first experimental observation of skyrmions, topological spin textures have been extensively studied for their great potential as efficient information carriers in spintronic devices. However, significant challenges have emerged alongside this progress. This review aims to synthesize recent advances in skyrmion research while addressing the major issues encountered in the field. Additionally, current research on promising topological spin structures in addition to skyrmions is summarized. Beyond 2D structures, exploration also extends to 1D magnetic solitons and 3D spin textures. In addition, a diverse array of emerging magnetic materials is introduced, including antiferromagnets and 2D van der Waals magnets, broadening the scope of potential materials hosting topological spin textures. Through a systematic examination of magnetic principles, topological categorization, and the dynamics of spin textures, a comprehensive overview of experimental and theoretical advances in the research of topological magnetism is provided. Finally, both conventional and unconventional applications are summarized based on spin textures proposed thus far. This review provides an outlook on future development in applied spintronics.

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