Volume 1 Issue 5, May 2018

Volume 1 Issue 5

Skyrmions on demand

Individual magnetic skyrmions — topologically protected spin textures — can be created and destroyed at room temperature in ferrimagnetic films using current pulses, a process that can be directly observed with time-resolved X-ray microscopy. The schematic illustration on the cover highlights the whirl-like magnetic configuration of the ferrimagnetic skyrmions.

See Woo et al. and News & Views by Everschor-Sitte et al.

Image: Ki-Young Lee, Korea Institute of Science and Technology. Cover Design: Karen Moore.

Editorial

  • Editorial |

    Technological innovation can require both an understanding of the past and a clear vision for the future — as the development of memristive devices illustrates.

Research Highlights

News & Views

  • News & Views |

    Topologically protected whirl-like magnetic textures are deterministically created and deleted using current pulses.

    • Karin Everschor-Sitte
    • , Jairo Sinova
    •  & Artem Abanov
  • News & Views |

    An implantable strain and pressure sensor, which is made from biodegradable polymers, could be used to track the healing of tendons and then degrade after its useful lifetime.

    • Sung-Geun Choi
    •  & Seung-Kyun Kang

Reviews

  • Review Article |

    This Review Article assesses the different techniques used to characterize memristive switching in nanoionic devices and proposes a general framework for such devices, based on the relative strengths and weaknesses in each case.

    • Yuchao Yang
    •  & Ru Huang

Research

Reverse Engineering

  • Reverse Engineering |

    The memristor — a resistor with memory — was first postulated back in 1971, but it took nearly four decades before it was experimentally confirmed. Leon O. Chua explains how he developed a nonlinear circuit theory in which the memristor emerges naturally as the fourth basic circuit element.

    • Leon O. Chua