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Defect-induced supersolidity with soft-core bosons

Author

Listed:
  • F. Cinti

    (Max Planck Institute for the Physics of Complex Systems
    National Institute for Theoretical Physics (NITheP))

  • T. Macrì

    (Max Planck Institute for the Physics of Complex Systems)

  • W. Lechner

    (IQOQI, Austrian Academy of Science, and Institute for Theoretical Physics, University of Innsbruck)

  • G. Pupillo

    (IPCMS (UMR 7504) and ISIS (UMR 7006), Université de Strasbourg and CNRS)

  • T. Pohl

    (Max Planck Institute for the Physics of Complex Systems)

Abstract

More than 40 years ago, Andreev, Lifshitz and Chester suggested the possible existence of a peculiar solid phase of matter, the microscopic constituents of which can flow superfluidly without resistance due to the formation of zero-point defects in the ground state of self-assembled crystals. Yet, a physical system where this mechanism is unambiguously established remains to be found, both experimentally and theoretically. Here we investigate the zero-temperature phase diagram of two-dimensional bosons with finite-range soft-core interactions. For low particle densities, the system is shown to feature a solid phase in which zero-point vacancies emerge spontaneously and give rise to superfluid flow of particles through the crystal. This provides the first example of defect-induced, continuous-space supersolidity consistent with the Andreev–Lifshitz–Chester scenario.

Suggested Citation

  • F. Cinti & T. Macrì & W. Lechner & G. Pupillo & T. Pohl, 2014. "Defect-induced supersolidity with soft-core bosons," Nature Communications, Nature, vol. 5(1), pages 1-6, May.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms4235
    DOI: 10.1038/ncomms4235
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    Cited by:

    1. Shi, Zeyun & Badshah, Fazal & Qin, Lu & Zhou, Yuan & Huang, Haibo & Zhang, Yong-Chang, 2023. "Spatially modulated control of pattern formation in a general nonlocal nonlinear system," Chaos, Solitons & Fractals, Elsevier, vol. 175(P1).
    2. Emmanuel Stiakakis & Niklas Jung & Nataša Adžić & Taras Balandin & Emmanuel Kentzinger & Ulrich Rücker & Ralf Biehl & Jan K. G. Dhont & Ulrich Jonas & Christos N. Likos, 2021. "Self assembling cluster crystals from DNA based dendritic nanostructures," Nature Communications, Nature, vol. 12(1), pages 1-10, December.
    3. Shi, Zeyun & Badshah, Fazal & Qin, Lu, 2023. "Two-dimensional lattice soliton and pattern formation in a cold Rydberg atomic gas with nonlocal self-defocusing Kerr nonlinearity," Chaos, Solitons & Fractals, Elsevier, vol. 166(C).

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