A theory is presented which accounts for the dynamical generation of a hybridization gap with nodes in the Kondo insulating materials CeNiSn and CeRhSb. By assuming that Coulomb interactions drive both charge and shape fluctuations of the Cerium f-state to high energies we are able to derive an effective three-channel Kondo lattice model. Interference amongst the different channels causes the hybridization to develop nodes and allows us to account for the formation of a nodal semi-metal.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering
- Kondo insulators
- Neutron scattering
- Thermal conductivity