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Showing 1–9 of 9 results
Advanced filters: Author: Peter Meisenheimer Clear advanced filters

  • Kosterlitz–Thouless–Halperin–Nelson–Young (KTHNY) theory describes the melting of an ordered two-dimensional phase to a disordered phase, via a quasi-ordered ‘hexatic’ phase. Magnetic skyrmions, as a phase of two-dimensional quasi-particles may be expected to exhibit a KTHNY melting process, however, observing such a phase transition is difficult. Herein, Meisenheimer et al study the formation of magnetic skyrmions in (Fe0.5Co0.5)5GeTe2, and, via physical confinement at device scale, succeed in obtaining an ordered skrymion phase.

    • Peter Meisenheimer
    • Hongrui Zhang
    • Ramamoorthy Ramesh
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-9

  • Organosodium compounds are appealing sustainable alternatives to precious transition metal compounds, yet they have rarely been used in homogeneous catalysis. Here, the authors introduce a dihydropyridylsodium compound, Na1,2-tBu-DH(DMAP), and its monomeric variant [Na-1,2-tBuDH(DMAP)]·Me6TREN, and demonstrate their effectiveness in transfer hydrogenation catalysis of a representative alkene, 1,1-diphenylethylene, using 1,4-cyclohexadiene as a hydrogen source.

    • Peter A. Macdonald
    • Alan R. Kennedy
    • Robert E. Mulvey
    ResearchOpen Access
    Communications Chemistry
    Volume: 7, P: 1-7

  • In this work, Meisenheimer et al. use careful epitaxial growth of FeGa thin films to achieve a metastable state with remarkably high magetostrictive coefficients. Materials with strong magnetostrictive properties are vital components in magnetoelectric multiferroic heterostructures, with considerable potential for use a variety of technologies.

    • P. B. Meisenheimer
    • R. A. Steinhardt
    • J. T. Heron
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-8

  • La-substitution in BiFeO3 enables an electric field-driven conversion of a multi-domain into a single ferroelectric domain accompanied by a single variant spin cycloid. A single domain multiferroic generates 400% larger non-local inverse spin Hall voltage at the output.

    • Sajid Husain
    • Isaac Harris
    • Ramamoorthy Ramesh
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-9

  • Stabilizing non-trivial magnetic spin textures at room temperature remains challenging. Here, the authors propose introducing magnetic atoms into the van der Waals gap of 2D magnets Fe3GaTe2 to stabilize the magnetic spin textures beyond skyrmion.

    • Hongrui Zhang
    • Yu-Tsun Shao
    • Ramamoorthy Ramesh
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-11

  • In the field of multiferroic thin films, attaining low-temperature epitaxy has been a long-standing problem. In this work, authors propose a pathway to significantly reduce the BiFeO3 thin film growth temperature using the BaBiPbO3 template.

    • Sajid Husain
    • Isaac Harris
    • Ramamoorthy Ramesh
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-9

  • Previous understanding of the coupling between ferroelectric structure and magnetic texture in BiFeO3 has relied on mesoscale measurements. Here, the authors image coupling directly, showing a complex spin cycloid controlled with electric field.

    • Peter Meisenheimer
    • Guy Moore
    • Ramamoorthy Ramesh
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-8