Peculiar Magnetic and Magneto-Transport Properties in a Noncentrosymmetric Self-Intercalated van der Waals Ferromagnet Cr<sub>5</sub>Te<sub>8</sub>
Trigonal Cr5Te8, a self-intercalated van der Waals ferromagnet with an out-of-plane magnetic anisotropy, has long been known to crystallize in a centrosymmetric structure. However, optical second harmonic generation experiments, together with comprehensive structural analysis, indicate that this compound rather adopts a noncentrosymmetric structure. Lorentz transmission electron microscopy reveals the presence of Néel-type skyrmions, consistent with its noncentrosymmetric structure. A large anomalous Hall conductivity of 102 Ω–1cm–1 at low temperature stems from intrinsic origin, which is larger than any previously reported values in the bulk Cr–Te system. Notably, spontaneous topological Hall resistivity arising from the skyrmionic phase has been observed. Our findings not only elucidate the unique magnetic and magneto-transport properties of noncentrosymmetric trigonal Cr5Te8, but also open new avenues for investigating the effects of broken inversion symmetry on material properties and their potential applications.
Authors
- Sankalpa Hazra (ORCID: https://orcid.org/0000-0002-9126-8058)
- Venkatraman Gopalan (ORCID: https://orcid.org/0000-0001-6866-3677)
- S. Parkin (ORCID: https://orcid.org/0000-0003-4702-6139)
- Sandip K. Kuila (ORCID: https://orcid.org/0000-0002-3348-5820)
- Chandan De (ORCID: https://orcid.org/0000-0003-1759-1137)
- Partha P. Jana (ORCID: https://orcid.org/0000-0002-1348-4150)
- Rana Saha (ORCID: https://orcid.org/0000-0001-6695-0007)
- Nitesh Kumar (ORCID: https://orcid.org/0000-0002-2274-5041)
- B. Rai (ORCID: https://orcid.org/0009-0005-4452-1881)
- Jyotirmoy Sau (ORCID: https://orcid.org/0000-0001-6805-0563)
Institutions
- Pennsylvania State University (US)
- Indian Institute of Technology Kharagpur (IN)
- Max Planck Institute of Microstructure Physics (DE)
- Indian Institute of Science Education and Research, Tirupati (IN)
- S.N. Bose National Centre for Basic Sciences (IN)
Publication Details
- Journal
- Chemistry of Materials
- Published
- 2025-01-16
- DOI
- https://doi.org/10.1021/acs.chemmater.4c02996
- Citations
- 3
- Primary Topic
- 2D Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 1.55
Funders
- Department of Science and Technology, Ministry of Science and Technology, India
- Council of Scientific and Industrial Research, India
- Max-Planck-Gesellschaft
- Science and Engineering Research Board