Photoemission and the Electronic Structure of PuCoGa5

Abstract

The electronic structure of the first Pu based superconductor PuCoGa5 is explored using photoelectron spectroscopy and a novel theoretical scheme. Exceptional agreement between calculation and experiment defines a path forward for understanding electronic structure aspects of Pu based materials. The photoemission results show two separate regions of 5f electron spectral intensity, one at the Fermi energy and another centered 1.2 eV below the Fermi level. The results for PuCoGa5 clearly indicate 5f electron behavior on the threshold between localized and itinerant. Comparisons to delta phase Pu metal show a broader framework for understanding the fundamental electronic properties of the Pu 5f levels in general within two configurations, one localized and one itinerant.

accepted by PRL

References in corpus (3)

• Heavy-fermion superconductivity in CeCoIn5 at 2.3K
• A New Heavy-Fermion Superconductor CeIrIn5: Relative of the Cuprates?
• Electronic Structure and Fermiology of PuCoGa${}_5$

Cited by in corpus (28)

• Superconducting phases of f-electron compounds
• Nature of the 5f states in actinide metals
• Intermediate Coupling Model of the Cuprates
• Strong-coupling d-wave superconductivity in PuCoGa_5 probed by point contact spectroscopy
• Electronic Duality in Strongly Correlated Matter
• Avoided Valence Transition in a Plutonium Superconductor
• Dynamical mean-field theory of photoemission spectra of actinide compounds
• Electronic Structure and Correlation Effects in PuCoIn5 as compared to PuCoGa5
• Synchrotron Radiation Techniques and their Application to Actinide Materials
• Spin-fluctuations and the peak-dip-hump feature in the photoemission spectrum of actinides
• Correlation effects in electronic structure of PuCoGa5
• Neutron magnetic form factor in strongly correlated materials
• Anisotropic spin fluctuations and superconductivity in "115'' heavy fermion compounds: 59Co NMR study in PuCoGa5
• Theory of nodal s+- wave pairing symmetry in the Pu-based 115 superconductor family
• Bulk properties and electronic structure of PuFeAsO
• Muon spin rotation measurements of the superfluid density in fresh and aged superconducting PuCoGa${}_5$
• Orbital-dependent correlations in PuCoGa${}_5$
• Imaging the formation of high-energy dispersion anomalies in the actinide UCoGa${}_5$
• Temperature-driven hidden 5f itinerant-localized crossover in heavy-fermion compound PuIn3
• Thermoelectric power as a probe of density of states in correlated actinide materials: the case of PuCoGa${}_5$ superconductor
• Probing magnetism in the vortex phase of PuCoGa${}_5$ by X-ray magnetic circular dichroism
• Quasiparticle multiplets and 5f electronic correlation in prototypical plutonium borides
• Self-consistent spin-fluctuation spectrum and correlated electronic structure of actinides
• Unraveling exotic 5$f$ states and paramagnetic phase of PuSn${}_3$
• Ultrasonic investigation of the Kondo semimetal CeBi
• Quantifying structural damage from self-irradiation in a plutonium superconductor
• Microscopic investigation of enhanced Pauli paramagnetism in metallic Pu${}_2$C${}_3$
• Spin-polaron band of heavy carriersin the heavy-fermion ferromagnetic superconductor UGe2