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Plutonium is a critically important material as the behavior of its5f-electrons stands midway between the metallic-like itinerant character of thelight actinides and localized atomic-core-like character of the heavyactinides. The delta-phase of plutonium (delta-Pu), while still itinerant, hasa large coherent Kondo peak and strong electronic correlations coming from itsnear-localized character. Using sophisticated Gutwiller wavefunction anddynamical mean-field theory correlated theories, we study for the first timethe Fermi surface and associated mass renormalizations of delta-Pu togetherwith calculations of the de Haas-van Alphen (dHvA) frequencies. We find a large(200%) correlation-induced volume expansion in both the hole and electronpockets of the Fermi surface in addition to an intermediate mass enhancement.All of the correlated electron theories predict, approximately, the same holepocket placement in the Brillouin zone, which is different from that obtainedin conventional density-functional band-structure theory, whereas the electronpockets from all theories are in, roughly, the same place.

Electronic Correlation Induced Expansion of Compensated Electron and Hole Fermi Pockets in delta-Plutonium