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Electrically induced bulk and edge excitations in the fractional quantum Hall regime

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arxiv 2502.01052 v1 pith:ZLYHWENZ submitted 2025-02-03 cond-mat.mes-hall cond-mat.str-elgr-qcquant-ph

Quentin France , Yunhyeon Jeong , Akinori Kamiyama , Takaaki Mano , Ken-ichi Sasaki , Masahiro Hotta , Go Yusa This is my paper
classification cond-mat.mes-hallcond-mat.str-elgr-qcquant-ph
keywords bulkexcitationsedgequantumelectricallyfractionalhallpulse
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abstract

We apply a voltage pulse to electrically excite the incompressible region of a two-dimensional electron liquid in the $\nu=2/3$ fractional quantum Hall state and investigate the collective excitations in both the edge and bulk via photoluminescence spectral energy shifts. Introducing an offset in the voltage pulse significantly enhances the excitation signal. Real-space and time-resolved measurements reveal the dynamics of the bulk excitations, with an estimated group velocity of approximately $3 \times 10^4$ m/s. These bulk excitations align well with the magneto-plasmon model. Our results highlight the topological link between edge and bulk states, providing a novel approach to exploring solid-state analogs of quantum gravity.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Dynamics of fractional quantum Hall Liquids with a pulse at the edge

    cond-mat.mes-hall 2025-07 conditional novelty 6.0 of 10

    A short tip pulse at the edge of a nu=1/3 Laughlin droplet excites edge modes and bulk magnetoroton excitations, with the balance controlled by pulse position, duration, and strength.

  2. Anomalous Bulk Current in Quantum Hall Systems with an Expanding Edge

    cond-mat.mes-hall 2025-06 conditional novelty 6.0 of 10

    For a quantum Hall system with an expanding edge, the authors show the edge carries a covariant gravitational anomaly and the bulk carries an equal and opposite integrated energy flux.

  3. Emergent Holographic Spacetime from Quantum Information

    hep-th 2025-06 unverdicted novelty 3.0 of 10

    Takayanagi's essay outlines a research program in which holographic spacetime, including the time direction, may emerge from entanglement, complexity, and complex-valued pseudo-entropy, without presenting a new derivation.

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