Topological matter articles within Nature

Featured

  • Letter |

    A topologically engineered graphene nanoribbon superlattice is presented that hosts a one-dimensional array of half-filled, in-gap localized electronic states, enabling band engineering.

    • Daniel J. Rizzo
    • , Gregory Veber
    •  & Felix R. Fischer

  • Letter |

    Fe3Sn2 hosts massive Dirac fermions, owing to the underlying symmetry properties of the bilayer kagome lattice in the ferromagnetic state and the atomic spin–orbit coupling.

    • Linda Ye
    • , Mingu Kang
    •  & Joseph G. Checkelsky

  • Letter |

    A two-dimensional phononic quadrupole topological insulator is demonstrated experimentally using mechanical metamaterials, which has both the one-dimensional edge states and the zero-dimensional corner states predicted by theory.

    • Marc Serra-Garcia
    • , Valerio Peri
    •  & Sebastian D. Huber

  • Article |

    A complete electronic band theory is presented that describes the global properties of all possible band structures and materials, and can be used to predict new topological insulators and semimetals.

    • Barry Bradlyn
    • , L. Elcoro
    •  & B. Andrei Bernevig

  • Letter |

    Suitably engineered mechanical metamaterials show static non-reciprocity—that is, the transmission of motion from one side to the other depends on the direction of that motion.

    • Corentin Coulais
    • , Dimitrios Sounas
    •  & Andrea Alù

  • Review Article |

    The interplay between spin–orbit coupling and two-dimensionality has led to the emergence of new phases of matter, such as spin-polarized surface states in topological insulators, interfacial chiral spin interactions, and magnetic skyrmions in thin films, with great potential for spin-based devices.

    • Anjan Soumyanarayanan
    • , Nicolas Reyren
    •  & Christos Panagopoulos

  • Letter |

    A hitherto unrecognized type of fermionic excitation in metals is described, which forms a chain of connected loops in momentum space (a nodal chain) along which conduction and valence bands touch.

    • Tomáš Bzdušek
    • , QuanSheng Wu
    •  & Alexey A. Soluyanov

  • Letter |

    Electronic transport measurements in a magnetic field on the topological Dirac semimetal Cd3As2 identify the predicted Weyl orbits that weave Fermi arcs and bulk states together; the Weyl orbits enable transfer of chirality from one node to another, and open up the possibility of controlling topological properties electronically.

    • Philip J. W. Moll
    • , Nityan L. Nair
    •  & James G. Analytis

  • Letter |

    Coupling a ferromagnetic insulator to a topological insulator induces a robust magnetic state at the interface, resulting from the large spin-orbit interaction and the spin-momentum locking property of Dirac fermions, and leads to an extraordinary enhancement of the magnetic ordering (Curie) temperature.

    • Ferhat Katmis
    • , Valeria Lauter
    •  & Jagadeesh S. Moodera

  • Letter |

    A new type of topological semimetal is described, which contains so-called type-II Weyl fermions and has very different properties to standard Weyl semimetals, owing to the existence of an open Fermi surface rather than a point-like one in the vicinity of Weyl points; WTe2 is predicted to be one such semimetal.

    • Alexey A. Soluyanov
    • , Dominik Gresch
    •  & B. Andrei Bernevig

  • Letter |

    Superconducting quantum circuits are used to directly observe and characterize topological phase transitions; this approach promises to be a powerful and general platform for characterizing topological phenomena in quantum systems.

    • P. Roushan
    • , C. Neill
    •  & J. M. Martinis

  • Letter |

    Charge flowing in a thin film of the topological insulator bismuth selenide at room temperature can lead to spin accumulation in the insulator and a resultant strong spin-transfer torque on an adjacent thin film of ferromagnetic nickel–iron alloy, potentially offering a means of controlling the orientation of the alloy’s magnetization.

    • A. R. Mellnik
    • , J. S. Lee
    •  & D. C. Ralph

  • Letter |

    An experimental realization of a photonic topological insulator is reported that consists of helical waveguides arranged in a honeycomb lattice; the helicity provides a symmetry-breaking effect, leading to optical states that are topologically protected against scattering by disorder.

    • Mikael C. Rechtsman
    • , Julia M. Zeuner
    •  & Alexander Szameit

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