Integrator based on current-controlled magnetic domain wall
- 1 February 2021
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 118 (5), 052402
- https://doi.org/10.1063/5.0041362
Abstract
Integrators are widely used in industrial controls, signal processing, and computing. However, traditional resistor–capacitor integrators incur leakage errors and zero drift, hindering their accuracy. By contrast, spintronic devices with good scalability and endurance for memory and logic applications in digital circuits have yet to be studied for analog circuit elements. Here, we propose a single-device spintronic integrator based on the current-controlled magnetic domain wall (DW). Continuous DW motion and correlated changes in the anomalous Hall resistance (or magneto-resistance) are encoded as an analog output signal, which is modulated by an input current through the spin–orbit-torque effect. Waveform transformation and phase-shift functions are demonstrated using Hall-bar devices. The spintronic integrator could pave the way for the spin-based analog computing with high reliability, high endurance, and good compatibility with the CMOS process.Keywords
Funding Information
- Research Project of Wuhan Science and Technology Bureau (2019010701011394)
- Fundamental Research Funds for the Central Universities (HUST: 2018KFYXKJC019)
- National Natural Science Foundation of China (62074063)
- National Natural Science Foundation of China (61821003)
- National Natural Science Foundation of China (61674062)
- National Key Research and Development Program of China (2020AAA0109000)
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