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Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
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Multistep magnetization switching in orthogonally twisted ferromagnetic monolayers
Carla Boix-Constant1, Sarah Jenkins2, Ricardo Rama-Eiroa2,3
1Instituto de Ciencia Molecular (ICMol) - Universitat de València, Paterna, Spain.
Nature Materials
|November 30, 2023
Summary
Twist engineering of magnetic 2D crystals creates artificial antiferromagnets. Orthogonal twisting of CrSBr monolayers introduces multistep magnetization switching and tunable magnetic hysteresis in van der Waals heterostructures.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Nanotechnology
Background:
- Twist engineering enables novel van der Waals heterostructures with unique properties.
- Magnetic 2D materials offer platforms for designing artificial magnetic systems.
Purpose of the Study:
- To investigate the magnetic properties of orthogonally twisted bilayer CrSBr.
- To explore the effects of twist angle on magnetization switching and magnetoresistance.
Main Methods:
- Fabrication of an orthogonally twisted bilayer using two CrSBr ferromagnetic monolayers (90° twist).
- Characterization of magnetotransport properties under varying magnetic fields.
Main Results:
- Observed multistep magnetization switching and magnetic hysteresis, absent in pristine CrSBr.
- Demonstrated modulation of remanent state and coercivity by magnetic field tuning.
- Identified hysteretic and non-hysteretic magnetoresistance behaviors.
Conclusions:
- Spin anisotropy is crucial for controlling magnetic properties in twisted magnetic superlattices.
- Twisted magnetic heterostructures offer tunable magnetic behaviors and field-induced phenomena.
- This work provides a platform for designing magnetic symmetries and manipulating non-collinear magnetic configurations.
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