17 citations · 37 across the 7 of their papers we have counts for
9 papers
Read-Rezayi fractional Chern insulators in modulated Bernal graphene
Ruth Mora-Soto, André Grossi Fonseca, Raul Perea-Causin +3
Fibonacci anyons provide a universal platform for topological quantum computation, and emerge as low-energy excitations in the Read-Rezayi phase in the fractional qu…
Zoology of chiral superconductors in Chern bands
André Grossi Fonseca, Aidan Reddy, Ahmed Abouelkomsan +2
Evidence for chiral superconductivity has recently been observed in several van der Waals systems including rhombohedral multilayer graphene and twisted bilayer MoTe. In the la…
Non-Hermiticity-induced chirality imbalance of Weyl Landau levels
Sachin Vaidya, Alaa Bayazeed, André Grossi Fonseca +3
Weyl semimetals obey a global chirality constraint: the net chiral topological charge and any associated chiral spectral flow must vanish, as required by the Nielsen-Ninomiya theor…
Refining Heuristic Predictors of Fractional Chern Insulators using Machine Learning
Oriol Mayné i Comas, André Grossi Fonseca, Sachin Vaidya +1
We develop an interpretable, data-driven framework to quantify how single-particle band geometry governs the stability of fractional Chern insulators (FCIs). Using large-scale exac…
Gradient-based search of quantum phases: discovering unconventional fractional Chern insulators
André Grossi Fonseca, Eric Wang, Sachin Vaidya +3
The discovery and understanding of new quantum phases has time and again transformed both fundamental physics and technology, yet progress often relies on slow, intuition-based the…
Quantized crystalline-electromagnetic responses in insulators
Sachin Vaidya, André Grossi Fonseca, Mark R. Hirsbrunner +2
We introduce new classes of gapped topological phases characterized by quantized crystalline-electromagnetic responses, termed "multipolar Chern insulators". These systems are char…
Exceptional topology on nonorientable manifolds
J. Lukas K. König, Kang Yang, André Grossi Fonseca +3
We classify gapped phases and characteristic nodal points of non-Hermitian band structures on two-dimensional nonorientable parameter spaces. Such spaces arise in a wide range of p…
Weyl points on non-orientable manifolds
André Grossi Fonseca, Sachin Vaidya, Thomas Christensen +3
Weyl fermions are hypothetical chiral particles that can also manifest as excitations near three-dimensional band crossing points in lattice systems. These quasiparticles are subje…
Quasicrystalline Weyl points and dense Fermi-Bragg arcs
André Grossi e Fonseca, Thomas Christensen, John D. Joannopoulos +1
We introduce a general mechanism for obtaining Weyl points in a stack of 2D quasicrystals, which can be extended to any stack of aperiodic layers. We do so by driving a topological…