Topological insulators articles within Nature

Featured

  • Article |

    A hybrid topological phase of matter is discovered in the simple elemental-solid arsenic and explored using tunnelling microscopy, photoemission spectroscopy and a theoretical analysis.

    • Md Shafayat Hossain
    • , Frank Schindler
    •  & M. Zahid Hasan

  • Article |

    Angle-resolved photoemission spectroscopy of CaNi2 shows a band with vanishing dispersion across the full 3D Brillouin zone that is identified with the pyrochlore flat band as well as two additional flat bands that arise from multi-orbital interference of Ni d-electrons.

    • Joshua P. Wakefield
    • , Mingu Kang
    •  & Joseph G. Checkelsky

  • Article |

    Transport measurements in twisted bilayer MoTe2 reveal quantized Hall resistance plateaus and composite Fermi liquid-like behaviour under zero magnetic field, constituting a direct observation of integer and fractional quantum anomalous Hall effects.

    • Heonjoon Park
    • , Jiaqi Cai
    •  & Xiaodong Xu

  • Article |

    The build-up and dephasing of Floquet-–Bloch bands is visualized in both subcycle band-structure videography and quantum theory, revealing the interplay of strong-field intraband and interband excitations in a non-equilibrium Floquet picture.

    • S. Ito
    • , M. Schüler
    •  & R. Huber

  • Article
    | Open Access

    The authors report observation of tunnelling magnetoresistance in an all-antiferromagnetic tunnel junction consisting of Mn3Sn/MgO/Mn3Sn, laying the foundation for the development of ultrafast and efficient spintronic devices using antiferromagnets.

    • Xianzhe Chen
    • , Tomoya Higo
    •  & Satoru Nakatsuji

  • Review Article |

    Recent key developments in the exploration of kagome materials are reviewed, including fundamental concepts of a kagome lattice, realizations of Chern and Weyl topological magnetism, flat-band many-body correlations, and unconventional charge-density waves and superconductivity.

    • Jia-Xin Yin
    • , Biao Lian
    •  & M. Zahid Hasan

  • Article |

    Optomechanical lattices in one and two dimensions with exceptionally low disorder are realized, showing how the optomechanical interaction can be exploited for direct measurements of the Hamiltonian, beyond the tight-binding approximation.

    • Amir Youssefi
    • , Shingo Kono
    •  & Tobias J. Kippenberg

  • Article |

    Magnetically tunable three-dimensional photonic crystals are used to achieve the experimental demonstration of Chern vectors and their topological surface states, showing the Chern vector to be an intrinsic bulk topological invariant in three-dimensional topological materials.

    • Gui-Geng Liu
    • , Zhen Gao
    •  & Baile Zhang

  • Article |

    A catalogue of the naturally occurring three-dimensional stoichiometric materials with flat bands around the Fermi level provides a powerful search engine for future theoretical and experimental studies.

    • Nicolas Regnault
    • , Yuanfeng Xu
    •  & B. Andrei Bernevig

  • Article |

    An electric-field-induced topological phase transition from a Mott insulator to a quantum anomalous Hall insulator in near-60-degree-twisted (or AB-stacked) MoTe2/WSe2 heterobilayers is reported.

    • Tingxin Li
    • , Shengwei Jiang
    •  & Kin Fai Mak

  • Article
    | Open Access

    The physics of oriented topological graphs produces anomalous non-reciprocal topological edge states that have greater robustness to disorder and defects than the best performers at present: namely, Chern states.

    • Zhe Zhang
    • , Pierre Delplace
    •  & Romain Fleury

  • Article |

    An acoustic topological gallery insulator constructed from sonic crystals made of thermoplastic rods decorated with carbon nanotube films enables the out-coupling of amplified and focused sound at audible frequencies.

    • Bolun Hu
    • , Zhiwang Zhang
    •  & Johan Christensen

  • Article |

    Nonlinearity is shown to induce quantized topological transport via soliton motion; specifically, we demonstrate nonlinear Thouless pumping of photons in waveguide arrays with a non-uniformly occupied energy band.

    • Marius Jürgensen
    • , Sebabrata Mukherjee
    •  & Mikael C. Rechtsman

  • Article |

    Magic-angle graphene is found to have an exotic phase transition where, on heating, entropy is transferred from motional to magnetic degrees of freedom, analogously to the Pomeranchuk effect in 3He.

    • Asaf Rozen
    • , Jeong Min Park
    •  & Shahal Ilani

  • Article |

    Pronounced quantum oscillations in magnetoresistance, a phenomenon that was only expected in metals with highly mobile carriers, are observed in the strongly insulating state of two-dimensional WTe2.

    • Pengjie Wang
    • , Guo Yu
    •  & Sanfeng Wu

  • Article |

    The number of edge channels in quantum anomalous Hall insulators is controlled by varying either the magnetic dopant concentration or the interior spacer layer thickness, yielding Chern numbers up to 5.

    • Yi-Fan Zhao
    • , Ruoxi Zhang
    •  & Cui-Zu Chang

  • Article |

    Strong electron–electron interactions in magic-angle twisted bilayer graphene can fundamentally change the topology of the system’s flat bands, producing a hierarchy of strongly correlated topological insulators in modest magnetic fields.

    • Kevin P. Nuckolls
    • , Myungchul Oh
    •  & Ali Yazdani

  • Article |

    Non-volatile electrical switching of magnetic order in an orbital Chern insulator is experimentally demonstrated using a moiré heterostructure and analysis shows that the effect is driven by topological edge states.

    • H. Polshyn
    • , J. Zhu
    •  & A. F. Young

  • Article |

    High-throughput calculations are performed to predict approximately 130 magnetic topological materials, with complete electronic structure calculations and topological phase diagrams.

    • Yuanfeng Xu
    • , Luis Elcoro
    •  & B. Andrei Bernevig

  • Article |

    Scanning tunnelling microscopy is used to reveal a new topological kagome magnet with an intrinsic Chern quantum phase, which shows a distinct Landau fan structure with a large Chern gap.

    • Jia-Xin Yin
    • , Wenlong Ma
    •  & M. Zahid Hasan

  • Article |

    Room-temperature electrical switching of a topological antiferromagnetic state in polycrystalline Mn3Sn thin films is demonstrated using the same protocol as that used for conventional ferromagnetic metals.

    • Hanshen Tsai
    • , Tomoya Higo
    •  & Satoru Nakatsuji

  • Article |

    Topological materials are thought to be scarce, but an algorithm that diagnoses nontrivial topology in nonmagnetic materials finds the opposite: more than 30 per cent of the 26,688 materials studied are topological.

    • Tiantian Zhang
    • , Yi Jiang
    •  & Chen Fang

  • Letter |

    A three-dimensional photonic topological insulator is presented, made of split-ring resonators with strong magneto-electric coupling, which has an extremely wide topological bandgap, forbidding light propagation.

    • Yihao Yang
    • , Zhen Gao
    •  & Hongsheng Chen

  • Letter |

    Quantized conductivity is observed along a Weyl orbit in wedge-shaped samples of the topological semimetal Cd3As2, providing evidence of the quantum Hall effect in three dimensions.

    • Cheng Zhang
    • , Yi Zhang
    •  & Faxian Xiu

  • Letter |

    A counter-intuitive state—known as a topological Anderson insulator—in which strong disorder leads to the formation of topologically protected rather than trivial states is realized in a photonic system.

    • Simon Stützer
    • , Yonatan Plotnik
    •  & Alexander Szameit

Browse broader subjects

Browse Topological insulators across other nature.com journals