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Updated: Feb 11, 2026
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Residue-Free Fabrication of van der Waals Heterostructures of Two-Dimensional Materials
Published on: July 18, 2025
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Chiral Damping in Two-Dimensional Materials/Ferromagnet Heterostructures.
Imane Berrai1, Zhaohui Li2, Guoyi Shi2
1Université Sorbonne Paris Nord, LSPM, CNRS, UPR 3407, Villetaneuse F-93430, France.
ACS Applied Materials & Interfaces
|February 10, 2026
Summary
Chiral damping, a new form of chirality in spintronics, was experimentally observed in 2D/ferromagnetic heterostructures. This phenomenon, independent of DMI, highlights the crucial role of interfaces in chiral magnetic devices.
Area of Science:
- Spintronics
- Condensed Matter Physics
- Materials Science
Background:
- Chiral spintronics utilizes chiral magnetic structures for advanced device functionalities.
- Chirality is often attributed to the Dzyaloshinskii-Moriya interaction (DMI), but can also arise from energy dissipation.
- Understanding novel sources of chirality is key for next-generation spintronic devices.
Purpose of the Study:
- To experimentally investigate chiral damping in novel 2D/ferromagnetic heterostructures.
- To explore chirality originating from energy dissipation processes, distinct from DMI.
- To quantify chiral damping and identify key parameters influencing it.
Main Methods:
- Fabrication of WTe2/Permalloy (Py) and PtTe2/Py heterostructures.
- Brillouin light scattering spectroscopy to analyze spin wave propagation.
- Measurement and analysis of line width asymmetry in spectra to detect chiral damping.
Main Results:
- Experimental observation of chiral damping in WTe2/Py and PtTe2/Py systems.
- Absence of measurable DMI, confirming chirality originates from damping.
- Direct quantification of chiral damping and identification of the interface as a critical factor.
Conclusions:
- Chiral damping is an experimentally verifiable phenomenon in 2D/ferromagnetic heterostructures.
- Interface properties significantly influence and enable chiral damping.
- This finding opens new avenues for designing spintronic devices based on chiral dissipation.
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