Articles in 2019

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  • An experiment using ultrafast light pulses demonstrates how to induce a transient chiral electron state in a trivial semimetal.

    • Justin C. W. Song
    News & Views
  • A transient topological response in graphene is driven by a short pulse of light. When the Fermi energy is in the predicted band gap the Hall conductance is around two conductance quanta. An ultrafast detection technique enables the measurement.

    • J. W. McIver
    • B. Schulte
    • A. Cavalleri
  • The ferromagnetism of iron has been known for millennia. Now a rotational form of spontaneous crystallographic ordering has been discovered. This touches upon fundamental questions about the relation between symmetry, structure and order in matter.

    • Manfred Fiebig
    News & Views
  • Little is known about how edge states in topological materials interact with each other. Here, a quantum spin Hall insulator is used to show that when edge states are brought close together, additional gaps appear in the spectrum.

    • Jonas Strunz
    • Jonas Wiedenmann
    • Laurens W. Molenkamp
  • A technique analogous to angle-resolved photoemission spectroscopy used in materials characterization has been developed for interacting Fermi gases in an optical lattice, providing information on the single-particle excitations in a many-body system.

    • Peter T. Brown
    • Elmer Guardado-Sanchez
    • Waseem S. Bakr
  • Physical forces have a profound influence on bacterial cell function and physiology. The new tools of nanophysics are bringing to light a tight connection between biomolecular mechanisms and mechanical forces in bacterial cell division.

    • Albertus Viljoen
    • Yves F. Dufrêne
    News & Views
  • Strongly interacting bosons in an optical lattice exhibit anomalous subdiffusive evolution when subjected to a dissipative process. The experimental observations are attributed to a mechanism termed ‘interaction-impeding of decoherence’.

    • Raphaël Bouganne
    • Manel Bosch Aguilera
    • Fabrice Gerbier
  • It is generally difficult to know in advance if a sheet of paper can be folded into an origami shape, but for quadrilateral crease patterns a tiling approach can identify all possible ways of folding them.

    • Christian Santangelo
    News & Views
  • The crease patterns for origami-based mechanical metamaterials can fold into myriad 3D shapes, but predicting foldability is no simple task. A framework for designing foldable patterns offers a neat alternative to extensive computer optimization.

    • Peter Dieleman
    • Niek Vasmel
    • Martin van Hecke