Image: Florian Schäfer, Kyoto University. Cover design: Charlotte Gurr.

In the August issue

Hydrodynamics of droplets out of equilibrium, quantum simulation with atoms in optical lattices, laboratory spectroscopy for astrochemistry and the 40th anniversay of the quantum Hall effect.

Latest Reviews

  • Review Article |

    The Kondo insulator samarium hexaboride is the first experimentally demonstrated example of a strongly correlated topological insulator. This article reviews the topological theory and experimental evidence, including a mystery as to the origin of quantum oscillations and their relation to possible unconventional bulk in-gap states.

    • Lu Li
    • , Kai Sun
    • , Cagliyan Kurdak
    •  & J. W. Allen
  • Perspective |

    Magnetic skyrmions, two-dimensional nanometre-scale localized states, are promising candidates for new technological applications. This Perspective surveys the progress in this field and offers a brief, accessible guide to the basic physical principles of magnetic skyrmions.

    • Alexei N. Bogdanov
    •  & Christos Panagopoulos
  • Perspective |

    Neuromorphic computing takes inspiration from the brain to create energy-efficient hardware for information processing, capable of highly sophisticated tasks. Including more physics in the algorithms and nanoscale materials used for computing could have a major impact in this field.

    • Danijela Marković
    • , Alice Mizrahi
    • , Damien Querlioz
    •  & Julie Grollier
  • Perspective |

    Droplets in general are multicomponent and experience gradients in concentration, often leading to transport phenomena and phase transitions. This Perspective discusses recent progress on the physicochemical hydrodynamics of such droplet systems and their relevance for many important applications.

    • Detlef Lohse
    •  & Xuehua Zhang
  • Review Article |

    Despite comprising only about 15% of the known molecular inventory of the interstellar medium, molecular ions have an outsized role in driving chemical evolution. This Review examines the advances — and challenges — in laboratory spectroscopy that have enabled the study of ions in space.

    • Brett A. McGuire
    • , Oskar Asvany
    • , Sandra Brünken
    •  & Stephan Schlemmer
  • Technical Review |

    Quantum simulation with ultracold atomic gases is an established platform for investigating complex quantum processes. Focusing on optical lattice experiments, this Technical Review overviews the available tools and their applications to the simulation of solid-state physics problems.

    • Florian Schäfer
    • , Takeshi Fukuhara
    • , Seiji Sugawa
    • , Yosuke Takasu
    •  & Yoshiro Takahashi

News & Comment

  • Editorial |

    All articles in Nature Reviews Physics are extensively edited in-house before publication. What do we do, and why?

  • Comment |

    Alec Habig and Kate Scholberg describe the Supernova Early Warning System (SNEWS), an international network of neutrino detectors aimed to alert the astronomical community if supernova neutrinos are detected.

    • Alec Habig
    •  & Kate Scholberg
  • Comment |

    Sarah Antier describes the Global Rapid Advanced Network Devoted to the Multi-messenger Addicts (GRANDMA), which aims to identify and characterize the electromagnetic counterparts of gravitational wave sources

    • Sarah Antier
  • Viewpoint |

    Over the past 40 years, the quantum Hall effect (QHE) has inspired new theories and led to experimental discoveries in a range of fields going beyond solid-state electronics to photonics and quantum entanglement. In this Viewpoint, physicists reflect on how the QHE has influenced their research.

    • Klaus von Klitzing
    • , Tapash Chakraborty
    • , Philip Kim
    • , Vidya Madhavan
    • , Xi Dai
    • , James McIver
    • , Yoshinori Tokura
    • , Lucile Savary
    • , Daria Smirnova
    • , Ana Maria Rey
    • , Claudia Felser
    • , Johannes Gooth
    •  & Xiaoliang Qi
  • Research Highlight |

    A Nature Nanotechnology paper presents evidence of new fractional excitations in monolayer WSe2

    • Ankita Anirban
  • Research Highlight |

    The Solar system is chaotic, making its long-term future hard to predict. A paper in Physical Review Letters shows that help may come in the form of instantons, more commonly used in statistical mechanics and gauge field theories.

    • Zoe Budrikis

Collection

40 years of the quantum Hall effect

Image courtesy of Vidya Madhavan, Illinois University

40 years of the quantum Hall effect

The discovery of the quantum Hall effect in 1980 marked a turning point in condensed matter physics.