4 papers
Ferromagnetism from the geometry of localized wavefunctions in moiré systems
Miguel Gonçalves, Sarang Gopalakrishnan
We present a mechanism for ferromagnetism in narrow bands consisting of Anderson-localized states. We exploit single-particle localization to derive a controlled theory of exchange…
Temperature-induced optical enhancement near a localization transition
Raul Liquito, Miguel Gonçalves, Bruno Amorim +1
Quasiperiodic systems are an intermediate class of systems between periodic crystals and disordered systems, famously exhibiting metal-insulator transitions (MITs) even in one dime…
Chiral skyrmionic superconductivity from doping a Chern Ferromagnet
Miguel Gonçalves, Kun Yang, Shi-Zeng Lin
We show that chiral superconductivity can be stabilized by hole doping a Chern ferromagnet. Performing exact diagonalization and density-matrix-renormalization-group calculations o…
Observation of High-Temperature Dissipationless Fractional Chern Insulator
Heonjoon Park, Weijie Li, Chaowei Hu +13
The fractional quantum anomalous Hall effect has recently been experimentally observed in zero-field fractional Chern insulators (FCI). However, an outstanding challenge is the pre…