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Anyon Superfluid in Trilayer Quantum Hall Systems
Phys. Rev. Lett. 137, 136502 – Published 21 September, 2026
DOI: https://doi.org/10.1103/96h3-z6r8
Abstract
Intertwining intrinsic topological order with gapless collective modes remains a central challenge in many-body physics. We show that a quantum-Hall trilayer at , tuned solely by the interlayer spacing , realizes this goal. Large-scale density-matrix renormalization group calculations and a Chern-Simons field theory analysis reveal an intermediate “anyon-exciton condensate” separating the familiar exciton condensate () from three decoupled Laughlin liquids (). In this phase, neutral bi-excitons condense while a Laughlin topological order survives, yielding a Goldstone mode coexisting with fractionalized anyons. A Ginzburg-Landau analysis maps out the finite-temperature phase diagram. The anyon-exciton condensate can be experimentally verified through a vanishing double-counter-flow resistance and a fractional layer-resolved Hall resistance of , both within reach of existing high-mobility trilayer devices.