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Showing 1–8 of 8 results
Advanced filters: Author: Peter M. Derlet Clear advanced filters

  • In metallic glasses, atomic-scale transport strongly affects the materials properties and thus performance in applications. Here the authors present the intermittent character of structural relaxation connected to microstructural heterogeneity, and power-law behavior at long time scales resulting from collective and correlated atomic motion.

    • Birte Riechers
    • Amlan Das
    • Robert Maaß
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-9

  • Artificial spin ice formed of nanomagnets arranged on a lattice mimics frustrated magnetism seen in condensed matter. By controlling magnetic interactions, theoretically predicted phase transitions are now observed in artificial kagome-lattice spin ice.

    • Kevin Hofhuis
    • Sandra Helen Skjærvø
    • Laura Jane Heyderman
    Research
    Nature Physics
    Volume: 18, P: 699-705

  • The long-range magnetic order in an artificial crystal that exhibits emergent ferrotoroidicity on the mesoscale can be manipulated by an effective magnetic vortex field that is generated by a scanning process with a magnetic tip.

    • Jannis Lehmann
    • Claire Donnelly
    • Manfred Fiebig
    Research
    Nature Nanotechnology
    Volume: 14, P: 141-144

  • Artificial spin-ice promises a means of probing dynamics in frustrated systems, but samples typically only shift between low-lying energy states under an external field. Exploring the energy landscape is now possible, through exquisite control over the thermal fluctuations of mesoscopic magnetic dipoles.

    • A. Farhan
    • P. M. Derlet
    • L. J. Heyderman
    Research
    Nature Physics
    Volume: 9, P: 375-382

  • Magnetic metamaterials can be designed to provide models of frustrated systems that allow theoretical predictions to be experimentally tested. Here the authors realise a 2D XY model with dipolar interactions and find behaviour consistent with predictions of a low-temperature ordered state.

    • Naëmi Leo
    • Stefan Holenstein
    • Laura J. Heyderman
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-8

  • Thermal annealing of metallic glasses is known to cause a universal increase of the relaxation time with sample age. Here, however, the authors show how a mechanical stress disrupts this universal response, leading to highly non-monotonous structural dynamics with time.

    • Amlan Das
    • Peter M. Derlet
    • Robert Maaß
    ResearchOpen Access
    Nature Communications
    Volume: 10, P: 1-9

  • Both extrinsic and intrinsic factors determine the properties of ferroic materials and are difficult to disentangle. This study on artificial crystals of planar nanomagnets with well-defined, tuneable magnetic interactions unveils the intrinsic correlations between microscopic interactions and macroscopic properties such as the domain size and morphology or the domain-wall mobility.

    • Jannis Lehmann
    • Amadé Bortis
    • Manfred Fiebig
    Research
    Nature Nanotechnology
    Volume: 15, P: 896-900