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Asymmetric magnetization switching and programmable complete Boolean logic enabled by long-range intralayer
Qianbiao Liu1,2, Long Liu3,4, Guozhong Xing3,4
1State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, China.
Nature Communications
|April 6, 2024
Summary
Researchers discovered a long-range intralayer Dzyaloshinskii-Moriya interaction (DMI) enabling electrical switching of magnetization. This chiral coupling effect facilitates programmable logic operations in spintronic devices.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Spintronics
Background:
- Fundamental physics for electrical switching of magnetization remains incomplete despite extensive research.
- Understanding chiral coupling mechanisms is crucial for advanced spintronic devices.
Purpose of the Study:
- To report the discovery of a novel long-range intralayer Dzyaloshinskii-Moriya interaction (DMI).
- To investigate the properties and consequences of this intralayer DMI effect.
- To demonstrate its application in creating programmable logic operations.
Main Methods:
- Theoretical investigation of chiral coupling between magnetic domains.
- Experimental characterization of magnetic properties in heterostructures.
- Fabrication and testing of spin-orbit torque devices.
Main Results:
- Discovery of long-range intralayer DMI mediated by an adjacent heavy metal layer.
- Observed out-of-plane effective magnetic field influencing perpendicular magnetization.
- Demonstrated asymmetric switching, hysteresis loop shift, and sharp field switching.
- Successful implementation of programmable Boolean logic operations using intralayer DMI.
Conclusions:
- The discovered long-range intralayer DMI provides a new pathway for electrical control of magnetism.
- This effect offers significant potential for developing advanced spintronic devices, including logic circuits.
- Further research into intralayer DMI in various spintronic systems is warranted.
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