Probing the anomalous Hall transport and magnetic reversal of quasi-two-dimensional antiferromagnet Co1/3NbS2
Abstract The recent discovery of anomalous Hall effect (AHE) in non-collinear antiferromagnets offers a promising platform for developing ultra-compact, ultrafast, and low-power antiferromagnetic spintronics, as well as for the in-depth investigation of topological physics. One notable example is th...
Saved in:
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2025-05-01
|
| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-59690-6 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | Abstract The recent discovery of anomalous Hall effect (AHE) in non-collinear antiferromagnets offers a promising platform for developing ultra-compact, ultrafast, and low-power antiferromagnetic spintronics, as well as for the in-depth investigation of topological physics. One notable example is the quasi-two-dimensional antiferromagnet Co1/3NbS2, which exhibits a large spontaneous Hall effect with compensated magnetization. Here, we report the observation of a large spontaneous Nernst effect in exfoliated Co1/3NbS2 flakes. By analyzing the temperature- and field-dependent thermoelectric and transport phenomena, we confirm the intrinsic k-space Berry curvature as the origin of the spontaneous Hall effect. Reflective magnetic circular dichroism measurements further reveal the presence of non-collinear antiferromagnetic domains in Co1/3NbS2. Combined with electrical transport measurements, we elucidate the distinct magnetic reversal mechanisms between bulk and exfoliated samples. Our study provides a comprehensive phenomenological understanding of the magnetic and transport properties of Co1/3NbS2, laying the groundwork for further exploration of the underlying physics and potential applications of two-dimensional non-collinear magnets. |
|---|---|
| ISSN: | 2041-1723 |