This work theoretically demonstrates that a pair of Dirac nodes under a Zeeman field enhances anomalous Nernst conductivity (ANC) compared to Weyl semimetals. First-principles calculations on Na₃Bi and NaTeAu show sizable ANC values (0.4 Am⁻¹K⁻¹ and 1.3 Am⁻¹K⁻¹, respectively). A hypothetical alloy, NaFeTe₂Au₂, exhibits an even higher ANC (3.7 Am⁻¹K⁻¹). This research provides a design principle for enhancing ANC by manipulating electronic structure.
Publisher
npj Computational Materials
Published On
Oct 27, 2023
Authors
Panshuo Wang, Zongxiang Hu, Xiaosong Wu, Qihang Liu
Tags
anomalous Nernst conductivity
Dirac nodes
Zeeman field
first-principles calculations
electronic structure
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