YMn₆Sn₆ – A Room-Temperature Kagome Magnet with Giant Nernst Effect

YMn₆Sn₆ – A Room-Temperature Kagome Magnet with Giant Nernst Effect

In this study, we explore the fascinating Kagome antiferromagnet YMn₆Sn₆, a material where magnetism and topology come together to create remarkable transport properties.
We observed a large anomalous Nernst effect (~2 µV/K at room temperature) — comparable to ferromagnets but in an antiferromagnetic system!
This huge transverse thermoelectric response arises from the Berry curvature near the Fermi level, breaking the conventional scaling seen in ferromagnets.
Our results show that YMn₆Sn₆ is a promising topological magnet for next-generation transverse thermoelectric devices that convert waste heat into electricity using a single material platform.

To read the full research article, visit:
“Large Room Temperature Anomalous Transverse Thermoelectric Effect in Kagome Antiferromagnet YMn₆Sn₆”
Subhajit Roychowdhury, Andrew M. Ochs, Satya N. Guin, Kartik Samanta, Jonathan Noky, Chandra Shekhar, Maia G. Vergniory, Joshua E. Goldberger, Claudia Felser
Published in Advanced Materials, 18 August 2022
https://doi.org/10.1002/adma.202201350