9 papers
Emergent superconductivity upon disordering a topological insulator
Carlos Eduardo S. P. Corsino, Hermann Freire, Anurag Banerjee
We study the emergence of superconductivity in a quantum spin Hall insulator and identify a disorder-driven enhancement of pairing arising from quantum geometry. Using sign-problem…
Spin sensitive transport in RuCl_3/Pt heterostructures: revealing a field-transverse spin anisotropy in a spin liquid candidate
H. Idzuchi, M. Kimata, S. Okamoto +7
Alpha-phase (a-) RuCl_3 has emerged as a possible candidate for a quantum spin liquid (QSL) that promises exotic quasi-particles relevant for fault-tolerant quantum computation. He…
Correlated Mott semi-metal in the topological heavy fermion model
Emile Pangburn, Igor de Melo Froldi, Anurag Banerjee
The topological heavy-fermion model provides a minimal framework for describing the coexistence of localized moments and itinerant Dirac electrons in magic-angle twisted bilayer gr…
Topological charge excitations and Green's function zeros in paramagnetic Mott insulators
Emile Pangburn, Catherine Pépin, Anurag Banerjee
We investigate the emergence of topological features in the charge excitations of Mott insulators in the Chern-Hubbard model. In the strong correlation regime, treating electrons a…
Charge Modulation in the Vortex Halo of a Superconductor Enhances its Critical Magnetic Field
Anurag Banerjee, Catherine Pépin, Nandini Trivedi +1
When an orbital magnetic field suppresses superconductivity, forming periodic vortices in type-II superconductors, subdominant orders can emerge in the vortex cores. Rather than co…
Probing quasiparticle excitations in a doped Mott insulator via Friedel oscillations
Anurag Banerjee, Emile Pangburn, Catherine Pépin +1
In this work, we investigate impurity-induced Friedel oscillations in the doped two-dimensional Hubbard model, focusing on the role of holon and doublon excitations. We show that w…