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Showing 1–9 of 9 results
Advanced filters: Author: J. Pelliciari Clear advanced filters

  • The thickness dependence of the dispersion of spin waves in mesoscopic iron films is measured and found to be renormalized in the out-of-plane direction as the thickness is reduced. The results are captured by a Heisenberg model that accounts for the confinement in the out-of-plane direction through the loss of Fe bonds.

    • Jonathan Pelliciari
    • Sangjae Lee
    • Valentina Bisogni
    Research
    Nature Materials
    Volume: 20, P: 188-193

  • Nickelates have been shown to host unconventional superconductivity, and recently it has been found that the choice of substrate can significantly change the superconducting critical temperature. This suggests, that like some Cuprates, strain could be important. Here Gao, Fan, Wang, and coauthors find that magnetic excitations in a parent Nickelate are insensitive to substrate choice, and therefore strain, which differs markedly from the case of Cuprates.

    • Qiang Gao
    • Shiyu Fan
    • Zhihai Zhu
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-7

  • Recently, excitons with unconventional properties were reported in a van der Waals antiferromagnet NiPS3. Here, using resonant inelastic x-ray scattering, the authors show that the formation of these excitons is primarily driven by Hund’s coupling and that they propagate similarly to two-magnon excitations.

    • W. He
    • Y. Shen
    • M. P. M. Dean
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-8

  • Previous work has shown the existence of spin-orbit-entangled excitons and their coupling to antiferromagnetism in the correlated insulator NiPS3. Here the authors show that non-equilibrium driving of these excitons produces a transient metallic antiferromagnetic state that cannot be achieved by tuning the temperature in equilibrium.

    • Carina A. Belvin
    • Edoardo Baldini
    • Nuh Gedik
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-7

  • FeSe does not exhibit magnetic order and lacks a nematic quantum critical point coinciding with optimal superconductivity, suggesting that an orbital mechanism drives nematicity, but direct evidence is lacking. Here, combining X-ray linear dichroism with in situ uniaxial stress, the role of spontaneous orbital polarization in nematic-phase FeSe is determined.

    • Connor A. Occhialini
    • Joshua J. Sanchez
    • Riccardo Comin
    Research
    Nature Materials
    Volume: 22, P: 985-991

  • The relationship between superconductivity and charge density waves is one of the unresolved mysteries of high temperature cuprate superconductors. The authors investigate this relationship using multilayers of cuprates and manganites for which the charge and orbital order of the latter is controlled by chemical substitution.

    • E. Perret
    • C. Monney
    • C. Bernhard
    ResearchOpen Access
    Communications Physics
    Volume: 1, P: 1-10