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Magnetism modulation in Co3Sn2S2 by current-assisted domain wall motion


The efficiency of spintronic devices can be improved by generating higher effective magnetic fields with lower working currents. Spin-transfer torques can drive magnetic domain wall motion in a device composed of a single material, but a high threshold current density is typically required to move the domain wall and improving the effective magnetic field in common itinerant ferromagnets is difficult. Here we report magnetism modulation in Co3Sn2S2—a magnetic Weyl semimetal—via spin-transfer-torque-driven domain wall motion. We examine the effect of d.c. current on magnetic reversal using anomalous Hall resistance measurements and domain wall motion using time-of-flight measurements. At 160 K, the threshold current density for driving domain wall motion is less than 5.1 × 105 A cm−2 at zero external field and less than 1.5 × 105 A cm−2 at a moderate external field (0.2 kOe). The spin-transfer-torque effective field can reach as high as 2.4–5.6 kOe MA−1 cm2 at 150 K.

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Fig. 1: Current modulation of the reversal process.
Fig. 2: Current-assisted DW motion model.
Fig. 3: DW velocity measurement.
Fig. 4: Derived STT efficiency.

Data availability

The data that support the findings of this study are available from the corresponding authors upon reasonable request. Source data are provided with this paper.


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We thank L. Liu and Y. Zhu for valuable discussions, X. Cheng for reflective magnetic circular dichroism measurements and J. Zhang for magnetic force microscopy measurements. This work was supported by the National Key R&D Program of China (grant nos. 2017YFA0206301 (Y.H.), 2018YFA0306900 (Y.Y.) and 2022YFA1403400 (E.L.)), the National Natural Science Foundation of China (grant nos. 52088101 (E.L.), 11974394 (E.L.), 51631001 (Y.H.) and 51672010 (Y.H.)), the Beijing Natural Science Foundation (grant no. JQ21018 (Y.Y.)), the Strategic Priority Research Program (B) of the Chinese Academy of Sciences (XDB33000000 (E.L.)), JST CREST (grant no. JPMJCR18T2 (K.N.)) and JSPS KAKENHI (grant no. JP20H01830 (K.N.)).

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Authors and Affiliations



Q.W. and Y.Y. conceived the project. Y.Z. grew the Co3Sn2S2 nanoflakes and fabricated the devices assisted by K.Y. Q.Z. and E.L. provided the precursor Co3Sn2S2 powders and helpful discussion for preparing the nanoflake samples. Q.W. conducted the transport measurements assisted by Y.Z., K.Y. and P.G. Q.W. analysed the data. X.X. performed the high-resolution transmission electron microscopy measurements. E.L. and K.N. provided scientific discussions. Q.W. and Y.Y. wrote the manuscript, with input from all the authors. Y.H. and Y.Y. supervised the project. All the authors discussed the results, interpretation and conclusion.

Corresponding authors

Correspondence to Enke Liu, Yanglong Hou or Yu Ye.

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Competing interests

The authors have applied for a Chinese patent (no. 202111248060.1) for using current injection to modulate magnetism in magnetic semimetal thin films, which is now under consideration.

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Nature Electronics thanks Yukako Fujishiro and the other, anonymous, reviewer(s) for their contribution to the peer review of this work.

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Supplementary Figs. 1–13 and Tables 1–7.

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Statistical source data.

Source Data Fig. 2

Statistical source data.

Source Data Fig. 3

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Wang, Q., Zeng, Y., Yuan, K. et al. Magnetism modulation in Co3Sn2S2 by current-assisted domain wall motion. Nat Electron (2022).

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