A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Fermi Surfaces of Mixed Valent and Heavy Fermion Metals
Abstract Results of local density band calculations are compared to available deHaas-vanAlphen measurements regarding Fermi surface properties for anomalous f electron systems. For metals where the f electrons behave coherently at low temperatures, such as CeSn3 and UPt3 good agreement is found between the calculated Fermi surface topology and the experimental one. For metals where the f electrons do not seem to behave coherently at low temperatures, such as CeSb and UPd3, agreement is again found if the f electrons are treated as unhybridized (core) states in the calculation. In all cases, there is a significant enhancement of the experimental quasiparticle masses over the band masses which are due to a variety of excited state effects (self-energy renormalizations) not taken into account in the ground state calculations. Finally, magnetic properties in such heavy fermion magnets as NpSn3 are explained by polarized band calculations which indicate gapping of parts of the Fermi surface through the phase transition.
Fermi Surfaces of Mixed Valent and Heavy Fermion Metals
Abstract Results of local density band calculations are compared to available deHaas-vanAlphen measurements regarding Fermi surface properties for anomalous f electron systems. For metals where the f electrons behave coherently at low temperatures, such as CeSn3 and UPt3 good agreement is found between the calculated Fermi surface topology and the experimental one. For metals where the f electrons do not seem to behave coherently at low temperatures, such as CeSb and UPd3, agreement is again found if the f electrons are treated as unhybridized (core) states in the calculation. In all cases, there is a significant enhancement of the experimental quasiparticle masses over the band masses which are due to a variety of excited state effects (self-energy renormalizations) not taken into account in the ground state calculations. Finally, magnetic properties in such heavy fermion magnets as NpSn3 are explained by polarized band calculations which indicate gapping of parts of the Fermi surface through the phase transition.
Fermi Surfaces of Mixed Valent and Heavy Fermion Metals
Norman, M. R. (author)
1987-01-01
7 pages
Article/Chapter (Book)
Electronic Resource
English
Electron Transport in Mixed Valence and Heavy Fermion Metals
| Springer Verlag | 1987
Energetics of Mixed Valent Systems
| Springer Verlag | 1987
Lattice Instabilities in Heavy Fermion Superconductors
| Springer Verlag | 1987
Spin Correlations in Heavy Fermion Systems
| Springer Verlag | 1987