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Updated: Sep 13, 2025
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Ohmic Contact Fabrication Using a Focused-ion Beam Technique and Electrical Characterization for Layer Semiconductor Nanostructures
Published on: December 5, 2015
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Interplay between charge transfer and magnetic proximity effects in WSe2/CrCl3 heterostructures
Łucja Kipczak1, Zhaolong Chen2, Magdalena Grzeszczyk3
1Institute of Experimental Physics, Faculty of Physics, University of Warsaw, 02-093 Warsaw, Poland. lucja.kipczak@fuw.edu.pl.
Nanoscale Horizons
|August 1, 2025
Summary
Van der Waals heterostructures with CrCl3 and WSe2 exhibit magnetic proximity effects. This interaction activates dark exciton emission in WSe2, enabling new spintronics and sensing applications.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Spintronics
Background:
- Van der Waals (vdW) systems offer unique magnetic properties.
- Proximity effects in vdW heterostructures can control material properties.
- CrCl3 and WSe2 are key materials for exploring magnetic and electronic interactions.
Purpose of the Study:
- To investigate the magnetic proximity effect in WSe2/CrCl3 heterostructures.
- To explore the activation of dark exciton emission in WSe2 via magnetic coupling.
- To assess the potential for spintronics and sensing applications.
Main Methods:
- Fabrication of WSe2/CrCl3 heterostructures.
- Photoluminescence spectroscopy to analyze WSe2 emission.
- Magnetic force microscopy to probe magnetic interactions.
Main Results:
- Efficient charge transfer observed, leading to WSe2 emission quenching.
- Magnetic proximity effect activates dark exciton emission in WSe2.
- Dark exciton emission persists above CrCl3's Curie temperature due to strain-induced effects.
Conclusions:
- WSe2/CrCl3 heterostructures demonstrate tunable magnetic and electronic properties.
- Activated dark excitons in WSe2 offer long-lived states for spintronics.
- The system shows promise for multi-dimensional local magnetic field sensing.
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