Journal
NANO LETTERS
Volume 19, Issue 11, Pages 8250-8254Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.9b03739
Keywords
anomalous Nernst effect; Fe3GeTe2; spin caloritronics; topological ferromagnet
Categories
Funding
- National Science Foundation [DMREF-1729555, DMR-1539918]
Ask authors/readers for more resources
Anomalous Nernst effect, a result of charge current driven by temperature gradient, provides a probe of the topological nature of materials due to its sensitivity to the Berry curvature near the Fermi level. Fe3GeTe2, one important member of the recently discovered two-dimensional van der Waals magnetic materials, offers a unique platform for anomalous Nernst effect because of its metallic and topological nature. Here, we report the observation of large anomalous Nernst effect in Fe3GeTe2. The anomalous Hall angle and anomalous Nernst angle are about 0.07 and 0.09, respectively, far larger than those in common ferromagnets. By utilizing the Mott relation, these large angles indicate a large Berry curvature near the Fermi level, consistent with the recent proposal for Fe3GeTe2 as a topological nodal line semimetal candidate. Our work provides evidence of Fe3GeTe2 as a topological ferromagnet and demonstrates the feasibility of using two-dimensional magnetic materials and their band topology for spin caloritronics applications.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available