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Nanoscale Magnetic Domains in Polycrystalline Mn3Sn Films Imaged by a Scanning Single-Spin Magnetometer
Senlei Li1, Mengqi Huang1, Hanyi Lu1
1Department of Physics, University of California, San Diego, La Jolla, California 92093, United States.
Nano Letters
|May 23, 2023
Summary
Researchers imaged magnetic domains in Mn3Sn films, revealing heterogeneous switching behaviors. This work advances understanding of noncollinear antiferromagnets for spintronic applications.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Spintronics
Background:
- Noncollinear antiferromagnets offer unique magnetic properties for advanced spintronic devices.
- Exploring and controlling their unconventional magnetic phases is crucial for next-generation microelectronics.
Purpose of the Study:
- To directly image magnetic domains in polycrystalline Mn3Sn films.
- To investigate the nanoscale evolution of magnetic switching behaviors under external stimuli.
Main Methods:
- Utilized nitrogen-vacancy (NV)-based single-spin scanning microscopy for direct imaging.
- Systematically studied local stray field patterns in response to driving forces.
Main Results:
- Directly imaged magnetic domains in polycrystalline Mn3Sn films.
- Observed characteristic heterogeneous magnetic switching behaviors.
- Characterized nanoscale evolution of stray fields.
Conclusions:
- The study provides a comprehensive understanding of inhomogeneous magnetic orders in noncollinear antiferromagnets.
- Highlights the potential of NV centers for studying microscopic spin properties in emergent condensed matter systems.
Keywords:
antiferromagnetic materialsquantum sensingscanning nitrogen-vacancy magnetometrytopological magnetsMore Related Videos
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