Electronic properties and materials articles within Nature

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  • Letter |

    The absolute timing of the photoelectric effect has proved difficult to measure, but the delay between photon arrival at a tungsten surface and ejection of photoelectrons has now been determined.

    • M. Ossiander
    • , J. Riemensberger
    •  & R. Kienberger

  • 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 |

    Specular scattering of atoms of helium gas flowing through atomically flat, two-dimensional channels results in frictionless gas flow, which is much faster than expected assuming purely diffusive scattering.

    • A. Keerthi
    • , A. K. Geim
    •  & B. Radha

  • Letter |

    The fundamental limits to plasmon damping in graphene are determined using nanoscale infrared imaging at cryogenic temperatures, and plasmon polaritons are observed to propagate over 10 micrometres in high-mobility encapsulated graphene.

    • G. X. Ni
    • , A. S. McLeod
    •  & D. N. Basov

  • Letter |

    For appropriately aligned layers of different two-dimensional materials, the separation between layers—and hence the interlayer coupling—is very sensitive to pressure, leading to pressure-induced changes in the electronic properties of the heterostructures.

    • Matthew Yankowitz
    • , Jeil Jung
    •  & Cory R. Dean

  • Letter |

    In a step towards topological quantum computation, a quantized Majorana conductance has been demonstrated for a semiconducting nanowire coupled to a superconductor.

    • Hao Zhang
    • , Chun-Xiao Liu
    •  & Leo P. Kouwenhoven

  • 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

  • Article |

    Group III/nitride semiconductors have been grown epitaxially on the superconductor niobium nitride, allowing the superconductor’s macroscopic quantum effects to be combined with the semiconductors’ electronic, photonic and piezoelectric properties.

    • Rusen Yan
    • , Guru Khalsa
    •  & Debdeep Jena

  • Letter |

    A quantum-liquid state of spin–orbital-entangled magnetic moments is observed in the 5d-electron honeycomb iridate H3LiIr2O6, evidenced by the absence of magnetic ordering down to 0.05 kelvin.

    • K. Kitagawa
    • , T. Takayama
    •  & H. Takagi

  • Letter |

    By embedding superparamagnetic nanoparticles in a thermoelectric matrix, phonon and electron transport within the material can be controlled simultaneously at nanometre and mesoscopic length scales, thereby improving the thermoelectric performance of the material.

    • Wenyu Zhao
    • , Zhiyuan Liu
    •  & Jing Shi

  • 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 |

    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 |

    A device consisting of a metallic island connected to electrodes via tunable semiconductor-based conduction channels is used to explore the evolution of charge quantization in the presence of quantum fluctuations; the measurements reveal a robust scaling of charge quantization as the square root of the residual electron reflection probability across a quantum channel, consistent with theoretical predictions.

    • S. Jezouin
    • , Z. Iftikhar
    •  & F. Pierre

  • Letter |

    Experimental demonstration of excitonic attraction between two electrons is achieved in quantum devices made from carbon nanotubes, where the interaction between two electrons is reversed from repulsive to attractive owing to their strong Coulomb interaction with another electronic system.

    • A. Hamo
    • , A. Benyamini
    •  & S. Ilani

  • Letter |

    A direct comparison of high harmonic generation in the solid and gas phases of Ar and Kr reveals higher harmonics in these rare-gas solids caused by strong interband couplings; evidence of recollisions implies that gas-phase techniques for attosecond pulse generation and orbital tomography could be adapted for solids.

    • Georges Ndabashimiye
    • , Shambhu Ghimire
    •  & David A. Reis

  • Letter |

    A fundamentally different approach to designing solid oxide electrolytes is presented, using a phase transition to suppress electronic conduction in a correlated perovskite nickelate; this yields ionic conductivity comparable to the best-performing solid electrolytes in the same temperature range.

    • You Zhou
    • , Xiaofei Guan
    •  & Shriram Ramanathan

  • Letter |

    A quasiparticle collider is developed that uses femtosecond optical pulses to create electron–hole pairs in the layered dichalcogenide tungsten diselenide, and a strong terahertz field to accelerate and collide the electrons with the holes.

    • F. Langer
    • , M. Hohenleutner
    •  & R. Huber

  • Letter |

    Ab initio calculations are used to identify the structural conditions under which a polar state in metals might be stabilized; this information is used to guide the experimental realization of new room-temperature polar metals.

    • T. H. Kim
    • , D. Puggioni
    •  & C. B. Eom

  • Letter |

    Scanned Josephson tunnelling microscopy is used to image Cooper pair tunnelling from a superconducting microscope tip to the quantum condensate of Bi2Sr2CaCu2O8+x, thus revealing the spatially modulated density of Cooper pairs predicted from several theories of the cuprate pseudogap phase.

    • M. H. Hamidian
    • , S. D. Edkins
    •  & J. C. Séamus Davis

  • Letter |

    Synthesis of atomically precise zigzag edges in graphene nanoribbons is demonstrated using a bottom-up strategy based on surface-assisted arrangement and reaction of precursor monomers; these nanoribbons have edge-localized states with large energy splittings.

    • Pascal Ruffieux
    • , Shiyong Wang
    •  & Roman Fasel

  • Letter |

    A combined experimental and theoretical investigation of phononic properties in nanocrystal-based semiconductors reveals that unusually strong coupling between phonons and electrons originates from the mechanical softness of the surfaces of the nanocrystalline domains and sheds new light on their recombination in nanocrystal-based devices.

    • Deniz Bozyigit
    • , Nuri Yazdani
    •  & Vanessa Wood

  • Letter |

    Low-temperature measurements of the Hall effect in cuprate materials in which superconductivity is suppressed by high magnetic fields show that the pseudogap is not related to the charge ordering that has been seen at intermediate doping levels, but is instead linked to the antiferromagnetic Mott insulator at low doping.

    • S. Badoux
    • , W. Tabis
    •  & Cyril Proust

  • Letter |

    In material systems with several interacting degrees of freedom, the complex interplay between these factors can give rise to exotic phases; now superlattices consisting of alternating layers of PbTiO3 and SrTiO3 are found to exhibit an unusual form of ferroelectric ordering in the PbTiO3 layers, in which the electric dipoles arrange themselves into regular, ordered arrays of vortex–antivortex structures.

    • A. K. Yadav
    • , C. T. Nelson
    •  & R. Ramesh

  • Letter |

    Organohalide perovskites and preformed colloidal quantum dots are combined in the solution phase to produce epitaxially aligned ‘dots-in-a-matrix’ crystals that have both the excellent electrical transport properties of the perovskite matrix and the high radiative efficiency of the quantum dots.

    • Zhijun Ning
    • , Xiwen Gong
    •  & Edward H. Sargent

  • Letter |

    Coherent energy transport is key to the operation of the photosynthetic machinery and the successful implementation of molecular electronics; self-assembled supramolecular nanofibres based on carbonyl-bridged triarylamines are now shown to transport singlet excitons over micrometre-scale distances at room temperature.

    • Andreas T. Haedler
    • , Klaus Kreger
    •  & Richard Hildner

  • Letter |

    Evidence is presented for electron pairing in strontium titanate far above the superconducting transition temperature; such pairs are thought to be the long-sought pre-formed pairs that condense at lower temperatures to give rise to the unconventional superconducting state in this system.

    • Guanglei Cheng
    • , Michelle Tomczyk
    •  & Jeremy Levy

  • Letter |

    The bandgap of bilayer graphene can be tuned with an electric field and topological valley polarized modes have been predicted to exist at its domain boundaries; here, near-field infrared imaging and low-temperature transport measurements reveal such modes in gapped bilayer graphene.

    • Long Ju
    • , Zhiwen Shi
    •  & Feng Wang

  • Letter |

    Quantum oscillation measurements in the underdoped copper oxide YBa2Cu3O6 + x reveal a nodal electronic structure from charge order, which helps to characterize the normal state out of which superconductivity emerges in the underdoped regime.

    • Suchitra E. Sebastian
    • , N. Harrison
    •  & G. G. Lonzarich

  • Letter |

    Nanoribbons of graphene grown on electronics-grade silicon carbide conduct electrons much better than expected; at room temperature, the charge carriers travel through the nanoribbons without scattering for a surprisingly long distance, more than ten micrometres.

    • Jens Baringhaus
    • , Ming Ruan
    •  & Walt A. de Heer

  • Letter |

    The ‘0.7-anomaly’ — an unexpected feature in the conductance of a quantum point contact — is shown to originate in a smeared van Hove singularity in the local density of states at the bottom of the lowest one-dimensional subband of the point contact.

    • Florian Bauer
    • , Jan Heyder
    •  & Stefan Ludwig

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