A Haldane phase in a one-dimensional topological Kondo insulator

MEZIO, ALEJANDRO; LOBOS, ALEJANDRO M.; DOBRY, ARIEL O.; GAZZA, CLAUDIO J.

Praga

Congreso; International Conference on Strongly Correlated Electron Systems SCES2017; 2017

Charles University (República Checa)

A complete topological classification of gapped phases of non-interactingfermions has been achieved in past years, and an interesting openquestion today is how to classify strongly interacting systems. In thissense, a new class of topological material with strong correlations are theso-called ?topological Kondo insulators?, where a Kondo insulator becomes topologically-ordered due to the different parity of hybridised f-and d- orbital bands and strong spin-orbit coupling. In this work, we usethe density-matrix renormalization group (DMRG) method to calculate theproperties of a recently proposed model for a topological Kondo insulatorin one dimension, the p-wave Kondo-Heisenberg model (p-KHM.