Abstract
A one-dimensional model of the Kondo lattice for $\ensuremath{\nu}$ degenerate conduction electrons interacting with local moments arranged regularly is formulated. The model is integrable and reduces to the $\mathrm{SU}(\ensuremath{\nu}+1)$-invariant $t\ensuremath{-}J$ model with field splitting. We present the exact solution via Bethe's ansatz; the ground-state energy, the chemical potential, the Fermi momentum, and the Fermi velocity have been calculated numerically for an arbitrary density of the electrons. We observe that the electron velocity decays to zero in a small vicinity of the critical concentration of the conduction electrons, which is direct evidence of the metal--Kondo-insulator transition due to strong correlations.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
