Topological charge-entropy scaling in kagome Chern magnet TbMn6Sn6

Xitong Xu, Jia Xin Yin, Wenlong Ma, Hung Ju Tien, Xiao Bin Qiang, P. V.Sreenivasa Reddy, Huibin Zhou, Jie Shen, Hai Zhou Lu, Tay Rong Chang, Zhe Qu, Shuang Jia

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


In ordinary materials, electrons conduct both electricity and heat, where their charge-entropy relations observe the Mott formula and the Wiedemann-Franz law. In topological quantum materials, the transverse motion of relativistic electrons can be strongly affected by the quantum field arising around the topological fermions, where a simple model description of their charge-entropy relations remains elusive. Here we report the topological charge-entropy scaling in the kagome Chern magnet TbMn6Sn6, featuring pristine Mn kagome lattices with strong out-of-plane magnetization. Through both electric and thermoelectric transports, we observe quantum oscillations with a nontrivial Berry phase, a large Fermi velocity and two-dimensionality, supporting the existence of Dirac fermions in the magnetic kagome lattice. This quantum magnet further exhibits large anomalous Hall, anomalous Nernst, and anomalous thermal Hall effects, all of which persist to above room temperature. Remarkably, we show that the charge-entropy scaling relations of these anomalous transverse transports can be ubiquitously described by the Berry curvature field effects in a Chern-gapped Dirac model. Our work points to a model kagome Chern magnet for the proof-of-principle elaboration of the topological charge-entropy scaling.

Original languageEnglish
Article number1197
JournalNature communications
Issue number1
Publication statusPublished - 2022 Dec

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • General
  • Physics and Astronomy(all)


Dive into the research topics of 'Topological charge-entropy scaling in kagome Chern magnet TbMn6Sn6'. Together they form a unique fingerprint.

Cite this