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Showing 1–11 of 11 results
Advanced filters: Author: Martin Mourigal Clear advanced filters

  • Disorder in quantum magnetic materials can mimic the behaviour of quantum spin liquids, however, quantifying disorder is challenging, often requiring magnetic fields large enough to fully polarize the system. Here, Kim, Rathi and coauthors show how the fine spectroscopic structure of magnetization plateaus can be used to quantify disorder in magnetic insulators.

    • Chaebin Kim
    • Sumedh Rathi
    • Zhigang Jiang
    ResearchOpen Access
    Nature Communications
    Volume: 17, P: 1-9

  • Magnetic excitations, or spinons, in a quasi-one-dimensional quantum magnet are investigated in an inelastic neutron-scattering experiment. The measurements confirm the existence of theoretically predicted higher-order spinons.

    • Martin Mourigal
    • Mechthild Enderle
    • Henrik M. Rønnow
    Research
    Nature Physics
    Volume: 9, P: 435-441

  • Quantum spin liquids are long-sought exotic states of matter that could transform quantum computing. Signatures of such a state have now been observed in a compound comprising iridium ions on a honeycomb lattice.

    • Martin Mourigal
    News & Views
    Nature
    Volume: 554, P: 307-308

  • Trivalent lanthanides are typically described using an ionic picture that leads to localized magnetic moments. Here authors show that the “textbook” description of lanthanides fails for Pr4+ ions where the hierarchy of single-ion energy scales can be tailored to explore correlated phenomena in quantum materials.

    • Arun Ramanathan
    • Jensen Kaplan
    • Henry S. La Pierre
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-11

  • Frustration in lattices of interacting spins can lead to rich and exotic physics, such as fractionalized excitations and emergent order. Here, the authors demonstrate a low-temperature transition from a disordered spin-ice-like phase to an emergent charge ordered phase in the bulk kagome Ising magnet Dy3Mg2Sb3O14.

    • Joseph A. M. Paddison
    • Harapan S. Ong
    • S. E. Dutton
    ResearchOpen Access
    Nature Communications
    Volume: 7, P: 1-8

  • It remains difficult to identify non-trivial band topology through electronic transport in narrow-gap topological materials. Here, the authors demonstrate that an inverted band leads to a four-fold splitting of non-zero Landau levels and an anomalous zero Landau level peak in the density of states of ZrTe5, hence can serve as an indicator to explore non-trivial topology.

    • Jingyue Wang
    • Yuxuan Jiang
    • Zhigang Jiang
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-7

  • Magnons are elementary quasiparticles describing collective excitations of magnetic materials, however more complex quasiparticles can arise from attractive interactions between magnons. Here the authors report several types of magnetic excitations in a spin-1 magnet FeI2 and uncover new magnon decay paths.

    • Xiaojian Bai
    • Shang-Shun Zhang
    • Cristian D. Batista
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-11

  • Neutron-scattering measurements on the magnetically ordered triangular-lattice compound FeI2 reveal a dispersive band of mixed dipolar–quadrupolar fluctuations just above its ground state—a quantum excitation without a classical counterpart.

    • Xiaojian Bai
    • Shang-Shun Zhang
    • Martin Mourigal
    Research
    Nature Physics
    Volume: 17, P: 467-472

  • A detailed and systematic neutron-scattering study uncovers a continuum of magnetic excitations down to 0.06 K in the triangular quantum magnet YbMgGaO4 — an observation consistent with quantum spin liquid behaviour.

    • Joseph A. M. Paddison
    • Marcus Daum
    • Martin Mourigal
    Research
    Nature Physics
    Volume: 13, P: 117-122