Crystalline symmetries are known for enforcing topological crossings in electronic band structure. In our research article, “Charge order induced Dirac pockets in the nonsymmorphic crstal TaTe4“, published today in Phys. Rev. B., we directly visualize the near-EF Dirac pockets through angle-resolved photoemission spectroscopy, agreeing well with the first-principles calculations carried out in the charge order (CO) state. The folded bands also indicate that the electrons near the Fermi level obey the CO-dictated crystalline symmetries to host unconventional eightfold Dirac fermions.

Congratulations to everyone who involved!

Our paper on charge order induced Dirac pockets in the nonsymmorphic crystal TaTe4 appeared in PRB today!