The Mott insulator is found in the two-channel Kondo lattice by using the dynamical mean-field theory combined with continuous-time quantum Monte Carlo method. At quarter filling of two conduction bands, the paramagnetic state shows metal-insulator crossover with increasing the coupling constant at low temperatures. The insulating state is explained by the strong coupling limit, where the system is effectively interpreted as the half-filled Hubbard model. It is shown that the present Mott insulating state is well described by the Hubbard I approximation.
|Journal||Journal of Physics: Conference Series|
|Publication status||Published - Jan 1 2012|
|Event||International Conference on Strongly Correlated Electron Systems, SCES 2011 - Cambridge, United Kingdom|
Duration: Aug 29 2011 → Sep 3 2011
ASJC Scopus subject areas
- Physics and Astronomy(all)