Abstract
We investigate whether or not Kondo insulators undergo a magnetic-field-induced metal-insulator transition in one dimension at half filling using both a density matrix formulation of the numerical renormalization group and bosonization. Contrary to expectations, the quasiparticle gap never vanishes at any field and no metal-insulator transition is found. We discuss generalizing our result to the asymmetric Anderson lattice. © 1996 The American Physical Society.
- Received 12 March 1996
DOI:https://doi.org/10.1103/PhysRevB.53.15377
©1996 American Physical Society