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The reverse quantum limit and its implications for unconventional quantum oscillations in YbB12

Author

Listed:
  • Christopher A. Mizzi

    (Los Alamos National Laboratory)

  • Satya K. Kushwaha

    (Los Alamos National Laboratory
    The Johns Hopkins University
    The Johns Hopkins University
    The Johns Hopkins University)

  • Priscila F. S. Rosa

    (MPA-Q, Los Alamos National Laboratory)

  • W. Adam Phelan

    (The Johns Hopkins University
    The Johns Hopkins University
    MST-16, Los Alamos National Laboratory)

  • David C. Arellano

    (MST-16, Los Alamos National Laboratory)

  • Lucas A. Pressley

    (The Johns Hopkins University
    The Johns Hopkins University
    The Johns Hopkins University)

  • Tyrel M. McQueen

    (The Johns Hopkins University
    The Johns Hopkins University
    The Johns Hopkins University)

  • Mun K. Chan

    (Los Alamos National Laboratory)

  • Neil Harrison

    (Los Alamos National Laboratory)

Abstract

The quantum limit in a Fermi liquid, realized when a single Landau level is occupied in strong magnetic fields, gives rise to unconventional states, including the fractional quantum Hall effect and excitonic insulators. Stronger interactions in metals with nearly localized f-electron degrees of freedom increase the likelihood of these unconventional states. However, access to the quantum limit is typically impeded by the tendency of f-electrons to polarize in a strong magnetic field, consequently weakening the interactions. In this study, we propose that the quantum limit in such systems must be approached in reverse, starting from an insulating state at zero magnetic field. In this scenario, Landau levels fill in the reverse order compared to regular metals and are closely linked to a field-induced insulator-to-metal transition. We identify YbB12 as a prime candidate for observing this effect and propose the presence of an excitonic insulator state near this transition.

Suggested Citation

  • Christopher A. Mizzi & Satya K. Kushwaha & Priscila F. S. Rosa & W. Adam Phelan & David C. Arellano & Lucas A. Pressley & Tyrel M. McQueen & Mun K. Chan & Neil Harrison, 2024. "The reverse quantum limit and its implications for unconventional quantum oscillations in YbB12," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-45801-2
    DOI: 10.1038/s41467-024-45801-2
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    References listed on IDEAS

    as
    1. Debanjan Chowdhury & Inti Sodemann & T. Senthil, 2018. "Mixed-valence insulators with neutral Fermi surfaces," Nature Communications, Nature, vol. 9(1), pages 1-7, December.
    2. B. J. Ramshaw & K. A. Modic & Arkady Shekhter & Yi Zhang & Eun-Ah Kim & Philip J. W. Moll & Maja D. Bachmann & M. K. Chan & J. B. Betts & F. Balakirev & A. Migliori & N. J. Ghimire & E. D. Bauer & F. , 2018. "Quantum limit transport and destruction of the Weyl nodes in TaAs," Nature Communications, Nature, vol. 9(1), pages 1-9, December.
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