• Accepted Paper

Anyon superfluid in trilayer quantum Hall systems

Taige Wang and Ya-Hui Zhang

Phys. Rev. Lett. - Accepted 24 July, 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 at ν1=ν2=ν3=13, tuned solely by the inter-layer spacing d, realizes this goal. Large-scale density-matrix renormalization group (DMRG) calculations and a Chern-Simons field theory analysis reveal an intermediate "anyon-exciton condensate" separating the familiar νtot=1 exciton condensate (d0) 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 (R_{xy}= h/e^{2}), both within reach of existing high-mobility trilayer devices.

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