Related Experiment Video
Updated: Jun 10, 2025
09:06
Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
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Efficient spin filtering through Fe4GeTe2-based van der Waals heterostructures.
Masoumeh Davoudiniya1, Biplab Sanyal1
1Department of Physics and Astronomy, Uppsala University Sweden Biplab.Sanyal@physics.uu.se.
Nanoscale Advances
|October 21, 2024
Summary
Fe4GeTe2-based van der Waals heterostructures show promise for spintronic devices. Simulations predict high spin polarization (97%) and tunnel magnetoresistance (487%) in Fe4GeTe2/GaTe/Fe4GeTe2 structures.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Spintronics
Background:
- Van der Waals heterostructures offer tunable electronic properties.
- Fe4GeTe2 (F4GT) is a ferromagnetic material with potential for spintronics.
Purpose of the Study:
- Investigate spin-dependent electronic transport in F4GT-based van der Waals heterostructures.
- Explore the potential of F4GT/GaTe/F4GT heterostructures for spintronic applications.
Main Methods:
- Utilized *ab initio* simulations to study electronic transport.
- Calculated electronic density of states and spin polarization.
- Simulated transport through F4GT/PtTe2 and F4GT/GaTe/F4GT heterostructures.
Main Results:
- F4GT exhibits ferromagnetic metallic behavior with weak interface interaction with PtTe2 electrodes.
- Predicted 97% spin polarization in a double-layer F4GT/PtTe2 structure.
- Achieved 487% tunnel magnetoresistance in F4GT/GaTe/F4GT heterostructures at low bias.
Conclusions:
- F4GT-based van der Waals heterostructures demonstrate efficient spin filtering and high spin polarization.
- F4GT/GaTe/F4GT heterostructures show significant potential for magnetic tunnel junctions in spintronic devices.
- These findings highlight the advancement of spintronics using van der Waals materials.
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