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Topologically-imposed vacancies and mobile solid 3He on carbon nanotube

Author

Listed:
  • I. Todoshchenko

    (Aalto University School of Science)

  • M. Kamada

    (Aalto University School of Science
    Aalto University)

  • J.-P. Kaikkonen

    (Aalto University School of Science)

  • Y. Liao

    (Aalto University School of Science)

  • A. Savin

    (Aalto University School of Science
    Aalto University)

  • M. Will

    (Aalto University School of Science
    Aalto University)

  • E. Sergeicheva

    (Aalto University School of Science)

  • T. S. Abhilash

    (Aalto University School of Science)

  • E. Kauppinen

    (Aalto University School of Science)

  • P. J. Hakonen

    (Aalto University School of Science
    Aalto University)

Abstract

Low dimensional fermionic quantum systems are exceptionally interesting because they reveal distinctive physical phenomena, including among others, topologically protected excitations, edge states, frustration, and fractionalization. Our aim was to confine 3He on a suspended carbon nanotube to form 2-dimensional Fermi-system. Here we report our measurements of the mechanical resonance of the nanotube with adsorbed sub-monolayer down to 10 mK. At intermediate coverages we have observed the famous 1/3 commensurate solid. However, at larger monolayer densities we have observed a quantum phase transition from 1/3 solid to an unknown, soft, and mobile solid phase. We interpret this mobile solid phase as a bosonic commensurate crystal consisting of helium dimers with topologically-induced zero-point vacancies which are delocalized at low temperatures. We thus demonstrate that 3He on a nanotube merges both fermionic and bosonic phenomena, with a quantum phase transition between fermionic solid 1/3 phase and the observed bosonic dimer solid.

Suggested Citation

  • I. Todoshchenko & M. Kamada & J.-P. Kaikkonen & Y. Liao & A. Savin & M. Will & E. Sergeicheva & T. S. Abhilash & E. Kauppinen & P. J. Hakonen, 2022. "Topologically-imposed vacancies and mobile solid 3He on carbon nanotube," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-33539-8
    DOI: 10.1038/s41467-022-33539-8
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    References listed on IDEAS

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    1. E. Kim & M. H. W. Chan, 2004. "Probable observation of a supersolid helium phase," Nature, Nature, vol. 427(6971), pages 225-227, January.
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    Cited by:

    1. Samuli Autti & Richard P. Haley & Asher Jennings & George R. Pickett & Malcolm Poole & Roch Schanen & Arkady A. Soldatov & Viktor Tsepelin & Jakub Vonka & Vladislav V. Zavjalov & Dmitry E. Zmeev, 2023. "Transport of bound quasiparticle states in a two-dimensional boundary superfluid," Nature Communications, Nature, vol. 14(1), pages 1-10, December.

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