Orbital Dependent Electronic Masses in Ce Heavy Fermion Materials studied via Gutzwiller Density Functional Theory

Abstract

A series of Cerium based heavy fermion materials is studied using a combination of local density functional theory and many-body Gutzwiller approximation. Computed orbial dependent electronic mass enhancements parameters are compared with available data extracted from measured values of the Sommerfeld coefficient. The Gutzwiller density functional theory is shown to remarkably follow the trends across a variety of Ce compounds, and to give important insights on orbital selective mass renormalizations that allows a better understanding of wide spread of data.

11 pages, 4 figures, 1 table

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• Gutzwiller Density Functional Theory: a formal derivation and application to ferromagnetic nickel
• Thermodynamics of the $\alpha$-$\gamma$ transition in cerium studied by an LDA + Gutzwiller method
• Gutzwiller variational wave function for multi-orbital Hubbard models in finite dimensions
• Quasi-particle bands and structural phase transition of iron from Gutzwiller Density-Functional Theory
• Renormalized quasiparticles, topological monopoles and superconducting line nodes in heavy fermion CeTX${}_3$ compounds
• Periodic Anderson model with Holstein phonons for the description of the Cerium volume collapse
• Measurements of electronic band structure in CeCoGe${}_3$ by angle-resolved photoemission spectroscopy
• A de Haas van Alphen study of the role of 4f electrons in antiferromagnetic CeZn11 as compared to its non-magnetic analogue LaZn11