Microscopic models for fractionalized phases in strongly correlated systems

Microscopic models for fractionalized phases in strongly correlated systems

We construct explicit examples of microscopic models that stabilize a variety of fractionalized phases of strongly correlated systems in a spatial dimension larger than one, and in a zero external magnetic field. These include models of charge fractionalization in boson-only systems, and various kinds of spin-charge separation in electronic systems. We determine the excitation spectrum, and sho...

Workshop: Strongly Correlated Topological Phases of Matter

Distinct Topological Crystalline Phases in Models for the Strongly Correlated Topological Insulator SmB_{6}.

SmB_{6} was recently proposed to be both a strong topological insulator and a topological crystalline insulator. For this and related cubic topological Kondo insulators, we prove the existence of four different topological phases, distinguished by the sign of mirror Chern numbers. We characterize these phases in terms of simple observables, and we provide concrete tight-binding models for each ...

Strongly correlated electron systems.

Strongly correlated electron systems.