Quantum fluids and solids articles within Nature Materials

Featured

  • Letter |

    The realization of strongly correlated bosons in a solid-state lattice is challenging. Here, the authors trap interlayer excitons in an angle-aligned WS2/bilayer WSe2/WS2 multilayer moiré lattice and observe correlated insulating states.

    • Yihang Zeng
    • , Zhengchao Xia
    •  & Kin Fai Mak

  • Letter |

    Both bosonic and fermionic collective states can emerge in two-dimensional semiconductor lattices, and mixing these species can further expand the landscape of quantum phases. Here, the authors report Bose–Fermi mixtures of neutral and charged excitons and the emergence of dual-density waves in an electrostatic lattice in a GaAs bilayer.

    • Camille Lagoin
    • , Stephan Suffit
    •  & François Dubin

  • Comment |

    Twentieth-century utopian visions of a space-age future have been eclipsed by dystopian fears of climate change and environmental degradation. Avoiding such grim forecasts depends on materials innovation and our ability to predict and plan not only their behaviour but also their sustainable manufacture, use and recyclability.

    • Philip Ball

  • Letter |

    Atomic-scale visualization of the superfluid velocity field, the electron-pair density and the superfluid current density in an electron-pair superfluid surrounding an Abrikosov vortex in a superconducting sample of NbSe2 is demonstrated, using superconducting-tip scanning tunnelling microscopy.

    • Xiaolong Liu
    • , Yi Xue Chong
    •  & J. C. Séamus Davis

  • Letter |

    Optical anisotropy and electronic compressibility measurements are used to uncover stripe phases, where the rotational symmetry of charge density is spontaneously broken, in a two-dimensional semiconductor moiré superlattice.

    • Chenhao Jin
    • , Zui Tao
    •  & Kin Fai Mak

  • Letter |

    Two adjacent quantum time crystals implemented by two magnon condensates in the superfluid B-phase of helium-3 are observed to coherently exchange magnons as a manifestation of the AC Josephson effect, offering insights on the dynamics and interactions between these phases of matter.

    • S. Autti
    • , P. J. Heikkinen
    •  & V. B. Eltsov

  • Article |

    Electric-field tunable plasmonic excitations in semiconducting carbon nanotubes are shown to behave consistently with the nonlinear Luttinger liquid theory, providing a platform to study non-conventional one-dimensional electron dynamics and realize integrated nanophotonic devices.

    • Sheng Wang
    • , Sihan Zhao
    •  & Feng Wang

  • Letter |

    A thorough analysis of the optical and transport properties of several two-dimensional organic conductors and insulators with varying on-site correlation strengths and bandwidths led to a quantitative phase diagram for pristine Mott insulators.

    • A. Pustogow
    • , M. Bories
    •  & M. Dressel

  • Commentary |

    Specialized imaging methods are now available to measure the quantum properties of materials with high sensitivity and resolution. These techniques are key to the design, synthesis and understanding of materials with exotic functionalities.

    • Kathryn Ann Moler

  • Review Article |

    This review discusses exciton–polaritons in microcavities and their emerging technological applications, with emphasis on the materials challenges for operation at room temperature.

    • Daniele Sanvitto
    •  & Stéphane Kéna-Cohen

  • News & Views |

    For 25 years of condensed matter science, physicists have searched for a material that realizes a macroscopic quantum state of matter: the quantum spin liquid. Recent experiments show that a necessary interaction may be found in a family of hexagonal ruthenium-based materials.

    • N. Peter Armitage

  • Article |

    Inelastic neutron scattering characterization shows that α-RuCl3 is close to an experimental realization of a Kitaev quantum spin liquid on a honeycomb lattice. The collective excitations provide evidence for deconfined Majorana fermions.

    • A. Banerjee
    • , C. A. Bridges
    •  & S. E. Nagler

  • Commentary |

    Collective quantum phenomena such as magnetism, superfluidity and superconductivity have been pre-eminent themes of condensed-matter physics in the past century. Neutron scattering has provided unique insights into the microscopic origin of these phenomena.

    • Steven T. Bramwell
    •  & Bernhard Keimer

  • Article |

    Quantum spin liquids are a state of magnetic order that, in analogy with ordinary liquids, is characterized by fluctuating, disordered spins. By means of specific heat measurements, the frustrated Kondo system Pr2Ir2O7 is shown to undergo a transition to such a state in zero magnetic field.

    • Y. Tokiwa
    • , J. J. Ishikawa
    •  & P. Gegenwart

  • Article |

    Cavity polaritons have been extensively studied in inorganic materials. An organic polariton condensate is now demonstrated to occur in the strongly interacting regime, at room temperature, in a cavity containing an organic polymer.

    • K. S. Daskalakis
    • , S. A. Maier
    •  & S. Kéna-Cohen

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