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Anyon Superfluid in Trilayer Quantum Hall Systems

Taige Wang1,2 and Ya-Hui Zhang3

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 ν1=ν2=ν3=13, tuned solely by the interlayer spacing d, 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 νtot=1 exciton condensate (d→0) from three decoupled Laughlin liquids (d→∞). In this phase, neutral bi-excitons condense while a ν=23 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 5h/2e2, both within reach of existing high-mobility trilayer devices.

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