Prediction of Nontrivial Topological Phases and Rashba Spin-Splitting in BaABTe₄ Janus Monolayers (A, B = Al, Ga, In, or Tl).

ABSTRACT: Two-dimensional (2D) materials have emerged as a significant focus in materials research due to their tunable properties on thermoelectricity, spin-splitting, and nontrivial topology. Specifically, Janus-type 2D materials are interesting due to their additional breaking of inversion or mirror symmetry in the atomic structure. Based on the recently synthesized monolayer MoSi₂N₄ and previously studied BaIn₂Te₄ with the chemical formula of MA₂Z₄, we derive a family of 2D Janus compounds, namely BaABTe₄. Using first-principles calculations, a total of six Janus BaABTe₄ monolayers (BaAlGaTe₄, BaAlInTe₄, BaAlTlTe₄, BaGaInTe₄, BaGaTlTe₄, and BaInTlTe₄

SUBMITTER: D'Souza J 

PROVIDER: S-EPMC12019431 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature