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  • Despite its technological importance, there remain gaps in our understanding of silicon’s electronic behaviour, especially at low temperatures. Measurements close to a metal–insulator transition show signs of a collective many-body quantum state.

    • Mark Lee
    News & Views
  • Majorana zero modes are emergent excitations in topological superconductors. This Perspective introduces the physics of these modes, recaps the recent history of the experimental search for them and discusses the future prognosis for success.

    • Sankar Das Sarma
  • The Lindemann criterion states that crystals melt when thermal vibrations overcome binding forces. It is now found that this picture does not hold for glasses, and that there is a universal relationship between glass temperature and thermal expansion.

    • Peter Lunkenheimer
    • Alois Loidl
    • Konrad Samwer
    Article Open Access
  • Strongly laser-driven quantum correlated many-body systems lead to the generation of light with exotic quantum features — the quantumness of a many-body system is imprinted on the state of the emitted light.

    • Paraskevas Tzallas
    News & Views
  • Strongly driven light sources have become useful in many ways but are limited to classical emission. A quantum-optical theory now shows how non-classical states of light can be achieved from strongly-driven many-body systems, for example, non-coherent and correlated high-harmonic generation.

    • Andrea Pizzi
    • Alexey Gorlach
    • Ido Kaminer
  • Strong correlations between electrons in topological surface states drive the formation of surface van Hove singularities. These may be linked to charge density waves in the surface states.

    • Daniel S. Sanchez
    • Tyler A. Cochran
    • M. Zahid Hasan
  • The authority of science within society is contested by antiscientific movements. To restore trust, science education should involve students in the social processes of knowledge production.

    • P. Riccardi
  • Disturbances in the orientation of magnetization in a magnet can propagate as spin waves or magnons. A design that makes it possible to optically excite nanoscale spin waves offers a route to developing miniaturized spin-based devices.

    • Akashdeep Kamra
    • Lina G. Johnsen
    News & Views
  • Adatoms on the surface of silicon can create two-dimensional superconductivity, the order parameter symmetry of which is currently not known. Now, evidence suggests it might be a topological chiral d-wave state.

    • F. Ming
    • X. Wu
    • H. H. Weitering
  • The protein VASP can undergo liquid–liquid phase separation. The interplay between the surface tension of the VASP droplet and actin polymerization controls the bundling of actin filaments, a necessary step for many cellular processes.

    • Kristin Graham
    • Aravind Chandrasekaran
    • Jeanne C. Stachowiak
  • Tides not only affect ocean dynamics but also influence the Earth’s magnetosphere. Satellite observations have now revealed evidence of tidal effects in the Earth’s plasmasphere correlated with Moon phases.

    • Balázs Heilig
    News & Views
  • By recovering energy from a relativistically accelerated electron beam in a multiturn configuration, a reduction of radiofrequency power has been demonstrated. This is a milestone toward more efficient and better performing accelerators.

    • Peter Williams
    News & Views