Local quantum criticality of a one-dimensional Kondo insulator model
Wei Kang Zhu, Jian‐Xin Zhu
The continuous quantum phase transition and the nature of the quantum critical point (QCP) in a modified Kondo lattice model with Ising anisotropic exchange interactions are studied within the density-matrix renormalization group algorithm. We investigate the effect of quantum fluctuations on critical Kondo destruction QCP by probing static and dynamic properties of the magnetic order and the Kondo effect. In particular, we identify that local Kondo physics itself becomes critical at the magnetic phase transition point, providing unbiased evidences for local quantum criticality between two insulators without involving the Fermi surface.
arXiv:1803.06570•Physical review. B./Physical review. B•Jun 13, 2018•5 citations