Spin-phase detection by spin current in a chiral helimagnet
The authors demonstrate here electrical detection of the spin phase in a van der Waals chiral helimagnet CrNb${}_{3}$S${}_{6}$ using a nonlocal spin valve. Because the spin diffusion length of the helimagnet (~5 nm) is much shorter than the helical pitch (48 nm), spin current sensitively probes the surface magnetic moment. Moreover, inverse spin Hall measurements reveal enhanced spin fluctuations near ${T}_{\mathrm{C}}$. These findings clearly indicate that the present method is highly effective for detecting surface magnetization and spin dynamics in low-dimensional systems.
Authors
- Shintaro Takada (ORCID: https://orcid.org/0000-0002-7831-585X)
- Ryo Kawahara (ORCID: https://orcid.org/0000-0002-9819-3634)
- Yoshihiko Togawa (ORCID: https://orcid.org/0000-0002-8673-0260)
- Yusuke Kousaka (ORCID: https://orcid.org/0000-0003-4347-7565)
- Y. Shimamoto (ORCID: https://orcid.org/0000-0002-2799-7846)
- Jun-ichiro Ohe (ORCID: https://orcid.org/0000-0001-8020-1379)
- Yasuhiro Niimi (ORCID: https://orcid.org/0000-0003-1659-0634)
- Nan Jiang (ORCID: https://orcid.org/0000-0002-5489-7410)
- Kazuki Yamada (ORCID: https://orcid.org/0000-0001-8263-0011)
- Shota Suzuki
- I Sasaki
- Hiroki Shoji
Institutions
- Toho University (JP)
- Spintronics Research Network of Japan (JP)
- Quantum Design (United States) (US)
- Osaka Metropolitan University (JP)
- The University of Osaka (JP)
Publication Details
- Journal
- Physical review. B./Physical review. B
- Published
- 2025-09-15
- DOI
- https://doi.org/10.1103/mfrs-6whs
- Citations
- 1
- Primary Topic
- Topological Materials and Phenomena
- Type
- article
- Field-Weighted Citation Impact
- 1.25
Funders
- Japan Society for the Promotion of Science
- Research Institute of Electrical Communication, Tohoku University