Topological Phases emerging from Spin-Orbital Physics
Strongly Correlated Electrons
2018-04-04 v1 Materials Science
Superconductivity
Abstract
We study the evolution of spin-orbital correlations in an inhomogeneous quantum system with an impurity replacing a doublon by a holon orbital degree of freedom. Spin-orbital entanglement is large when spin correlations are antiferromagnetic, while for a ferromagnetic host we obtain a pure orbital description. In this regime the orbital model can be mapped on spinless fermions and we uncover topological phases with zero energy modes at the edge or at the domain between magnetically inequivalent regions.
Cite
@article{arxiv.1706.02140,
title = {Topological Phases emerging from Spin-Orbital Physics},
author = {Wojciech Brzezicki and Mario Cuoco and Filomena Forte and Andrzej M. Oleś},
journal= {arXiv preprint arXiv:1706.02140},
year = {2018}
}
Comments
6 pages, 5 figures, submitted