Year: 2025
Type: article
Abstract: Electrical creation, control, and detection of magnetic spin textures are pivotal in the advancement of magnetic data storage and logic technologies. All-electrical methods are especially important for detecting such magnetic textures due to their easier implementation in electronic circuits. Here, we demonstrate the electrical detection of different magnetic multidomain and vortex patterns through pure spin-polarized electronic transport in graphene spin-valve devices. We utilized ferromagnetic electrodes with engineered magnetic domain patterns to inject a spin current into the graphene spin transport channel, which was subsequently detected by a reference ferromagnetic electrode with a quasi-single domain. Distinct multilevel spin-valve switching patterns facilitate the discernment of the spin polarization from the diverse domain patterns. The magnetization of the ferromagnetic electrodes is correlated with magnetic force microscopy and micromagnetic simulations. These developments open avenues for probing magnetic domain and spin dynamics through fully electrical means with pure spin currents for spintronic memory and logic.
Source: Nano Letters
Authors: Lars Sjöström, Bing Zhao, Maha Khademi, Roselle Ngaloy, Alexei Kalaboukhov, Johan Åkerman, Saroj P. Dash
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,500
Awards: G2115222242, Topology and Magnetism in Novel Quantum Materials, 2Dimensional van der Waals Spin-Orbit Torque Technology, G6686055282, G6720377545, 2D material-based technology for industrial applications (2D-TECH), Spin-orbit materials, emergent phenomena and related technology training, Spintronics with Topological Quantum Material and Magnetic Heterostructures, Ultra-large networks of ultra-small nano-oscillators: fundamentals, quantum materials, and emerging applications.
OpenAlex ID: W4417536605