6 papers
Spinless and spinful charge excitations in moiré Fractional Chern Insulators
Miguel Gonçalves, Juan Felipe Mendez-Valderrama, Jonah Herzog-Arbeitman +5
Fractionally charged elementary excitations, the quasi-electron and quasi-hole, are one of the hallmarks of the fractional Chern insulator (FCI). In this work, we observe that spon…
Quasiperiodic Quadrupole Insulators
Raul Liquito, Miguel Gonçalves, Eduardo V. Castro
Higher-order topological insulators are an intriguing new family of topological states that host lower-dimensional boundary states. Concurrently, quasiperiodic systems have garnere…
Disorder-induced instability of a Weyl nodal loop semimetal towards a diffusive topological metal with protected multifractal surface states
João S. Silva, Miguel Gonçalves, Eduardo V. Castro +2
Weyl nodal loop semimetals are gapless topological phases that, unlike their insulator counterparts, may be unstable to small perturbations that respect their topology-protecting s…
Edge-driven transition between extended quantum anomalous Hall crystal and fractional Chern insulator in rhombohedral graphene multilayers
Zezhu Wei, Ang-Kun Wu, Miguel Gonçalves +1
Fractional Chern insulators (FCI) with fractionally quantized Hall conductance at fractional fillings and an extended quantum anomalous Hall (EQAH) crystal with an integer quantize…
Fractal Quasicondensation in One Dimension
Flavio Riche, Miguel Gonçalves, Bruno Amorim +2
We unveil a novel mechanism for quasicondensation of hard-core bosons in the presence of quasiperiodicity-induced multifractal single-particle states. The new critical state, here…
Doping-induced Quantum Anomalous Hall Crystals and Topological Domain Walls
Miguel Gonçalves, Shi-Zeng Lin
Doping carriers into a correlated quantum ground state offers a promising route to generate new quantum states. The recent advent of moiré superlattices provided a versatile platf…