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Screening the Coulomb interaction leads to a prethermal regime in two-dimensional bad conductors

Author

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  • L. J. Stanley

    (Florida State University
    Florida State University)

  • Ping V. Lin

    (Florida State University
    Zhejiang Sci-Tech University)

  • J. Jaroszyński

    (Florida State University)

  • Dragana Popović

    (Florida State University
    Florida State University)

Abstract

The absence of thermalization in certain isolated many-body systems is of great fundamental interest. Many-body localization (MBL) is a widely studied mechanism for thermalization to fail in strongly disordered quantum systems, but it is still not understood precisely how the range of interactions affects the dynamical behavior and the existence of MBL, especially in dimensions D > 1. By investigating nonequilibrium dynamics in strongly disordered D = 2 electron systems with power-law interactions ∝ 1/rα and poor coupling to a thermal bath, here we observe MBL-like, prethermal dynamics for α = 3. In contrast, for α = 1, the system thermalizes, although the dynamics is glassy. Our results provide important insights for theory, especially since we obtained them on systems that are much closer to the thermodynamic limit than synthetic quantum systems employed in previous studies of MBL. Thus, our work is a key step towards further studies of ergodicity breaking and quantum entanglement in real materials.

Suggested Citation

  • L. J. Stanley & Ping V. Lin & J. Jaroszyński & Dragana Popović, 2023. "Screening the Coulomb interaction leads to a prethermal regime in two-dimensional bad conductors," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-42778-2
    DOI: 10.1038/s41467-023-42778-2
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