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Topological Hubbard model and its high-temperature quantum Hall effect
Titus Neupert, Luiz Santos, Shinsei Ryu +2
The quintessential two-dimensional lattice model that describes the competition between the kinetic energy of electrons and their short-range repulsive interactions is the repulsiv…
Time-reversal symmetric hierarchy of fractional incompressible liquids
Luiz Santos, Titus Neupert, Shinsei Ryu +2
We provide an effective description of fractional topological insulators that include the fractional quantum spin Hall effect by considering the time-reversal symmetric pendant to…
Coexistence of Ferromagnetism and Superconductivity in Noncentrosymmetric Materials with Cubic Symmetry
Titus Neupert, Manfred Sigrist
This is a model study for the emergence of superconductivity in ferromagnetically ordered phases of cubic materials whose crystal structure lacks inversion symmetry. A Ginzburg-Lan…
Fractional topological liquids with time-reversal symmetry and their lattice realization
Titus Neupert, Luiz Santos, Shinsei Ryu +2
We present a class of time-reversal-symmetric fractional topological liquid states in two dimensions that support fractionalized excitations. These are incompressible liquids made…