Construction of a Spacetime Magnetic Hopfion

Spacetime magnetic hopfions from internal excitations and braiding of skyrmions

  • Ross Knapman
  • Timon Tausendpfund
  • Karin Everschor-Sitte
Article

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  • Five year anniversary

    To celebrate our 5 year anniversary we present a collection of some of our favourite articles selected by editors and Editorial Board Members. Also, don't forget to cast your vote for our top feature image!

  • Leonid Pourovskii's headshot

    Leonid Pourovskii is a permanent researcher at the Center for Theoretical Physics (CPHT) of CNRS and Ecole Polytechnique in Palaiseau, France. His domain of research is electronic structure and magnetism of correlated materials, in particular, of multipolar "hidden"-order phases, rare-earth-based magnets and materials at extreme conditions.

  • Ching Hua Lee

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    Communications Physics has a 2-year impact factor of 5.4 (2023), a median decision times of 9 days to first editorial decision and 175 days from submission to acceptance.

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  • Due to its proximity to the Sun, the space plasma environment of Mercury is tightly coupled with the interior and the surface of the planet, and their interaction facilitate the escape of planetary material and energy exchange. The authors present data from the third flyby of the BepiColombo spacecraft revealing new evidence of trapped energetic hydrogen (H+) with energies of around 20 keV/e and highlight the presence of cold ion population below 50 eV/e in Mercury’s magnetosphere.

    • Lina Z. Hadid
    • Dominique Delcourt
    • Shoya Matsuda
    ArticleOpen Access
  • Manipulation of materials properties by laser driving can lead to future technological applications, but a complete picture of its mechanisms is missing. In their paper, authors propose a method based on ultrafast x-ray diffraction that allows for resolving laser-driven electron dynamics on their natural time and length scales.

    • Daria Popova-Gorelova
    • Robin Santra
    ArticleOpen Access
  • Edge-magnetoplasmon interferometers have been proposed as a tool to investigate anyonic properties of quasiparticles in the regime of the Fractional Quantum Hall effect. In this work, the authors demonstrate the possibility to control electrostatically the resonance frequency of EMP resonators of micrometric size and explain the role of gates, paving the way toward the realization of anyonic interferometers.

    • Elric Frigerio
    • Giacomo Rebora
    • Gerbold C. Ménard
    ArticleOpen Access
  • The authors introduce a hybrid quantum-classical algorithm for photonic quantum computing that focuses on tackling continuous-variable optimization problems using fewer quantum operations than existing methods. The approach shows better performance and practical implementation potential, demonstrated on Xanadu’s quantum chip.

    • Pranav Chandarana
    • Koushik Paul
    • Xi Chen
    ArticleOpen Access
  • The reversal of spin chirality in the absence of any externally applied field would substantially broaden the use of chiral magnets for applications in spintronic devices. In this manuscript the authors demonstrate the spontaneous reversal of spin chirality in the topological magnet EuAl4 using resonant elastic x-ray scattering.

    • Anuradha M. Vibhakar
    • Dmitry D. Khalyavin
    • Alessandro Bombardi
    ArticleOpen Access
  • Enhancing deformation of soft microparticles such as cells, capsules and vesicles has widespread applications in cell phenotyping, drug/gene delivery and smart material synthesis. Here, the authors demonstrate that enclosing a capsule into a droplet can amplify the capsule deformation parameter by up to two orders of magnitude, compared with an isolated capsule experiencing identical channel flow conditions.

    • Dalei Jing
    • Ruixin Lu
    • Yi Sui
    ArticleOpen Access
  • Asteroid tracking has been demonstrated as a promising and prominent probe of fifth forces arising in several well-motivated models beyond the Standard Model of particle physics. The authors use the state-of-art tracking data for the asteroid Bennu from the OSIRIS-REx mission to derive the tightest limits on fifth forces and ultralight dark matter at the lengths of solar-system objects.

    • Yu-Dai Tsai
    • Davide Farnocchia
    • Luca Visinelli
    ArticleOpen Access
  • The authors introduce a network growth and adoption model with preferential attachment and asymmetric mixing that can explain the inequalities observed in the group growth dynamics in scientific citation and collaboration. This model can be used to investigate the effect of intervention in group mixing preferences to overcome cumulative disparities.

    • Jun Sun
    • Fariba Karimi
    ArticleOpen Access
  • Engineering sizeable spin-orbit coupling (SOC) in graphene generates effects unmatched in traditional low-dimensional systems. Here, the authors show that the periodic modulation of SOC in 1D patterned graphene heterostructures leads to unusual mini-band structures with symmetry-protected Dirac cones featuring enhanced spin Berry curvature, which paves the way to tunable spin Hall responses.

    • L. M. Martelo
    • Aires Ferreira
    ArticleOpen Access

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