Strongly coupled magneto-exciton condensates in large-angle twisted double bilayer graphene

Q Li, Y Chen, LN Wei, H Chen, Y Huang, Y Zhu… - Nature …, 2024 - nature.com
Excitons, pairs of electrons and holes, undergo a Bose-Einstein condensation at low
temperatures. An important platform to study excitons is double-layer two-dimensional …

Excitons in the fractional quantum Hall effect

NJ Zhang, RQ Nguyen, N Batra, X Liu, K Watanabe… - Nature, 2025 - nature.com
Excitons, Coulomb-driven bound states of electrons and holes, are typically composed of
integer charges,. However, in bilayer systems influenced by charge fractionalization,, a more …

Perfect Coulomb drag in a dipolar excitonic insulator

PX Nguyen, L Ma, R Chaturvedi, K Watanabe… - arxiv preprint arxiv …, 2023 - arxiv.org
Excitonic insulators (EIs), arising in semiconductors when the electron-hole binding energy
exceeds the band gap, are a solid-state prototype for bosonic phases of matter. Unlike the …

Electrical control of two-dimensional electron-hole fluids in the quantum Hall regime

B Zou, Y Zeng, AH MacDonald, A Strashko - Physical Review B, 2024 - APS
We study the influence of quantizing perpendicular magnetic fields on the ground state of a
bilayer with electron and hole fluids separated by an opaque tunnel barrier. In the absence …

Exciton crystal melting and destruction by disorder in a bilayer quantum Hall system with a total filling factor of one

Z Hu, K Yang - Physical Review B, 2024 - APS
A bilayer quantum Hall system with a total filling factor of one was studied in the regime of a
heavy layer imbalance in a recent transport experiment (Y. Zeng, arxiv: 2306.16995), with …

Identification and Control of Neutral Anyons

RQ Nguyen, NJ Zhang, N Batra, X Liu… - arxiv preprint arxiv …, 2024 - arxiv.org
Beyond the well-known fermions and bosons, anyons-an exotic class of particles-emerge in
the fractional quantum Hall effect and exhibit fractional quantum statistics. Anyons can be …

Quantum metric driven transition between superfluid and incoherent fluid

X Ying, K Li - arxiv preprint arxiv:2410.12254, 2024 - arxiv.org
We study the interplay between repulsive interaction and superfluidity in flat band system.
We consider spatially indirect excitons in the Lieb lattice bilayer as an example. We show …