Large longitudinal and anomalous transverse Magneto-thermoelectric effect in kagome antiferromagnet FeGe

[2511.21361] Large longitudinal and anomalous transverse Magneto-thermoelectric effect in kagome antiferromagnet FeGe Skip to main content Search Submit Donate Log in Condensed Matter > Materials Science arXiv:2511.21361 (cond-mat) [Submitted on 26 Nov 2025] Title: Large longitudinal and anomalous transverse Magneto-thermoelectric effect in kagome antiferromagnet FeGe Authors: Jiajun Ma , Rong Chen , Yazhou Li , Chenfei Shi , Yantao Cao , YuWei Zhang , Jiaxing Liao , Yunfei Han , Guangxi Wen , Jialu Wang , Hanjie Guo , Jianhui Dai , Chenguang Fu , Jin-Ke Bao , Yan Sun , Zhu-An Xu , Yuke Li View PDF Abstract: Topological Kagome magnets, characterized by nontrivial electronic band structures featuring flat band, Dirac cone and van Hove singularities, provide a new avenue for the realization of thermoelectric devices. Unlike the conventional longitudinal Seebeck effect, transverse thermoelectric (TE) effects like the Nernst effect have attracted growing interest due to their unique transverse geometry and potential advantages. Here, we report the observation of a significant transverse thermoelectric conductivity alpha A_zx of 15 A K-1m-1 at low temperatures, together with a pronounced anomalous Nernst effect in the Kagome antiferromagnet FeGe, which exhibits a charge density wave inside the antiferromagnetic (AFM) state. This value is the highest record among known AFM materials. Furthermore, the thermopower at 14 T increases by 102-104% around the canted-AFM (CAFM) transition temperature, Tcant, comparable to that of the well-known AFM thermoelectric materials. These effects are attributed to large Berry curvature arising from the non-collinear spin texture in FeGe, highlighting its potential for enhancing thermoelectric performance and its candidacy for magneto-TE applications in Kagome antiferromagnetic materials. Comments: 16 pages, 4 figures Subjects: Materials Science (cond-mat.mtrl-sci) Cite as: arXiv:2511.21361 [cond-mat.mtrl-sci] (or arXiv:2511.21361v1 [cond-mat.mtrl-sci] for this version) https://doi.org/10.48550/arXiv.2511.21361 Focus to learn more arXiv-issued DOI via DataCite Journal reference: Advanced Functional Materials (2026): e77634 Related DOI : https://doi.org/10.1002/adfm.77634 Focus to learn more DOI(s) linking to related resources Submission history From: Yuke Li [ view email ] [v1] Wed, 26 Nov 2025 13:10:07 UTC (2,498 KB) Full-text links: Access Paper: View PDF view license Current browse context: cond-mat.mtrl-sci < prev | next > new | recent | 2025-11 Change to browse by: cond-mat References & Citations SciX Google Scholar Semantic Scholar export BibTeX citation Bookmark Bibliographic Tools Bibliographic and Citation Tools Bibliographic Explorer Toggle Bibliographic Explorer ( What is the Explorer? ) Connected Papers Toggle Connected Papers ( What is Connected Papers? ) Litmaps Toggle Litmaps ( What is Litmaps? ) scite.ai Toggle scite Smart Citations ( What are Smart Citations? ) Code, Data, Media Code, Data and Media Associated with this Article alphaXiv Toggle alphaXiv ( What is alphaXiv? ) Links to Code Toggle CatalyzeX Code Finder for Papers ( What is CatalyzeX? ) DagsHub Toggle DagsHub ( What is DagsHub? ) GotitPub Toggle Gotit.pub ( What is GotitPub? ) Huggingface Toggle Hugging Face ( What is Huggingface? ) ScienceCast Toggle ScienceCast ( What is ScienceCast? ) Demos Demos Replicate Toggle Replicate ( What is Replicate? ) Spaces Toggle Hugging Face Spaces ( What is Spaces? ) Spaces Toggle TXYZ.AI ( What is TXYZ.AI? ) Related Papers Recommenders and Search Tools Link to Influence Flower Influence Flower ( What are Influence Flowers? ) Core recommender toggle CORE Recommender ( What is CORE? ) IArxiv recommender toggle IArxiv Recommender ( What is IArxiv? ) Author Venue Institution Topic About arXivLabs arXivLabs: experimental projects with community collaborators arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website. Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners that adhere to them. Have an idea for a project that will add value for arXiv's community? Learn more about arXivLabs . Which authors of this paper are endorsers? | Disable MathJax ( What is MathJax? ) We gratefully acknowledge support from our major funders , member institutions , and all contributors. About · Help · Contact · Subscribe · Copyright · Privacy · Accessibility · Operational Status (opens in new tab)

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