What Has Been Achieved: The synthesis and measurement of single crystals of high-entropy antimonides exhibiting Dirac stated differing in character from those of the end members of the composition range considered. These findings create a foundation for an expanded palette of IRG2 research activities.
Importance of the Achievement: High-entropy formulation distorts crystal structure at the local level altering the character of Dirac states.
How is the achievement related to the IRG, and how does it help it achieve its goals? One of the guiding high-entropy value propositions of IRG2 is that many-cation oxides with high solubility exhibit high crystalline fidelity while exhibiting a broad spectrum of local structures with great chemical diversity which is difficult or impossible to replicate in low-entropy systems. In the present case, these different local distortions control the dimensionality of the Fermi surface.
Where the findings are published: Laha, A., Yoshida, S., Marques dos Santos Vieira, F. et al. High-entropy engineering of the crystal and electronic structures in a Dirac material. Nat Commun 15, 3532 (2024). https://doi.org/10.1038/s41467-024-47781-9