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Showing 1–8 of 8 results
Advanced filters: Author: Gaihua Ye Clear advanced filters

  • Antiferromagnets have a variety of attractive features for spintronic devices; they are inherently robust against external magnetic fields, and have fast, terahertz, dynamics. However, terahertz magnons are usually strongly damped. Here, Choe, Lujan and coauthors find that the zone boundary magnons in the AFM insulator CoTiO3 exhibit long lifetimes.

    • Jeongheon Choe
    • David Lujan
    • Xiaoqin Li
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-9

  • Magnetic phases that are stabilized by quantum fluctuations in low dimensions are rare. A thickness-dependent crossover from three-dimensional antiferromagnetism to a two-dimensional vestigial nematic state that is driven by fluctuations has now been observed.

    • Zeliang Sun
    • Gaihua Ye
    • Liuyan Zhao
    Research
    Nature Physics
    Volume: 20, P: 1764-1771

  • A moiré potential may play a role in determining the magnetic properties of a two-dimensional homo or heterostructure. Now, non-collinear spin structures are observed in twisted double bilayer CrI3, providing a platform to engineer unusual magnetic textures.

    • Hongchao Xie
    • Xiangpeng Luo
    • Liuyan Zhao
    Research
    Nature Physics
    Volume: 19, P: 1150-1155

  • Exciton dynamics can be strongly affected by lattice vibrations through electron-phonon (e-ph) coupling. Here, the authors show the presence of strong e-ph coupling in bilayer CrI3 and observe a Raman feature with periodic broad modes up to the 8th order, attributed to the polaronic character of excitons.

    • Wencan Jin
    • Hyun Ho Kim
    • Liuyan Zhao
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-7

  • By carefully inducing twists or lattice stacking offsets between two adjacent van der Waals crystals, a superlattice potential can be introduced. This Moire lattice offers an incredibly rich physics, ranging from superconductivity to exotic magnetism, depending on van der Waals materials in question. Here, Du et al. study the magnetic domains in twisted CrI3, and show that despite this ___domain structure, spin fluctuations are spatially homogenous.

    • Mengqi Huang
    • Zeliang Sun
    • Chunhui Rita Du
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-7

  • The authors report a crossover from easy-plane to easy-axis magnetic anisotropy in monolayer RuCl3, which they attribute to an in-plane distortion of the Cl atoms observed in electron diffraction that modify the non-Kitaev exchange terms. The results are useful for overcoming the challenge of realizing a quantum spin liquid.

    • Bowen Yang
    • Yin Min Goh
    • Adam W. Tsen
    Research
    Nature Materials
    Volume: 22, P: 50-57