Topology and Correlations in Actinide Materials

5f-electrons possess both strong electronic correlations and strong spin orbit coupling. This combination suggests that actinides are ideal for discovering new topologically non-trivial phases, which arise as a consequence of strong electronic correlations. For instance, some of the most promising candidates to host majorana modes in a bulk topological superconductor exist in actinides such as UTe₂. Similarly, topological insulators with large bulk gaps and renormalized surface states are proposed to exist in materials such as PuB₄. In this talk we also highlight the potential for topological effects and correlated states using the metallic ferromagnet UCo_0.8Ru_0.2Al. Our calculations reveal 148 Weyl nodes and two nodal lines that exist within 60 meV of the Fermi level. Within that context, perhaps it is not surprising that we find an anomalous Nernst effect, which gives rise to a colossal Peltier coefficient, α_xy = 18 A/Km, more than four times larger than that found in Co₂MnGa. Using U₃Ru₄Al₁₂ and field angle rotation studies we illustrate that the Berry curvature is highly tunable in these actinide materials. These examples illustrate that exploring the actinide road for new states in topologically non-trivial correlated matter is a promising path.