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Updated: Feb 11, 2026

Residue-Free Fabrication of van der Waals Heterostructures of Two-Dimensional Materials

Residue-Free Fabrication of van der Waals Heterostructures of Two-Dimensional Materials

Published on: July 18, 2025

二次元材料/強磁性体ヘテロ構造におけるキラルダンピング

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

Abstract:

The use of chiral spintronics, founded upon chiral magnetic structures, holds particular promise for the prospective development of devices that exhibit enhanced performance and functionalities. While much of the chirality in such systems has traditionally been linked to the Dzyaloshinskii-Moriya interaction (DMI), recent theoretical and experimental developments suggest that chirality can also manifest in energy dissipation processes. In this work, we report on experimental observation of the chiral damping phenomenon involving heterostructures combining 2D and ferromagnetic materials, namely WTe₂/Permalloy (Py) and PtTe₂/Py based systems. This effect was revealed through an analysis of the line width asymmetry in the Brillouin light scattering spectra, which reflects the dissipation characteristics of counter-propagating spin waves. Interestingly, while no measurable value was observed for the DMI, the existence of chirality associated with the damping is experimentally established. Therefore, we were able to directly quantify chiral damping and demonstrate that interface is a key parameter.

キーワード:

ブリルアン散乱分光法 PtTe2 WTe2 キラルダンピングスピン波と磁化ダイナミクス

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Quantifying the Relative Thickness of Conductive Ferromagnetic Materials Using Detector Coil-Based Pulsed Eddy Current Sensors

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