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Herbertsmithite is a kagome material presumed to host a spin liquid phase with fractionalized excitations. Here, Mazin et al.study the crystallographic and electronic properties of gallium-substituted herbertsmithite, finding that it has symmetry-protected Dirac points at the Fermi level.

CeRh₆Ge₄, a cerium-based ferromagnetic material, exhibits quantum critical behavior under pressure, posing intriguing questions about its magnetic interactions. Here, the authors use density functional theory combined with dynamical mean-field theory to reveal the formation of isotropic spin chains along the c axis that are coupled by anisotropic inter-chain interactions, elucidating the material’s ferromagnetic transition and quantum criticality.

Fe-based superconductors have attracted tremendous interest recently. New evidence on BaFe₂As₂ shows that chemical doping and pressure, both of which induce superconductivity, distort the lattice in similar ways. The result provides important information in the quest for an understanding of the mechanism behind superconductivity.

Quantum spin liquids have magnetic moments that do not form magnetic order even as the temperature approaches zero, leading to the dominance of quantum fluctuations. Chillal et al. present evidence that the hyper-hyperkagome lattice of PbCuTe₂O₆ hosts a three-dimensional quantum spin liquid.

Recently, quantum spin liquid signatures have been found in 3D systems. Here, using a combination of inelastic neutron scattering and calculations, the authors study the dynamic magnetic properties of a 3D quantum spin liquid candidate K₂Ni₂(SO₄)₃, identifying a spin liquid region in the theoretical phase diagram.

Surface magnetic order could precede bulk order, but detecting such a separation necessitates experimental probes sensitive to both surface and bulk phase transitions. Here, using second harmonic generation, the authors propose that this situation is realized in a van der Waals antiferromagnet CrSBr.

Spangolite’s unique geometrically frustrated maple-leaf lattice presents theoretical challenges in understanding its non-magnetic ground state and magnetic properties. Here, the authors propose a spatially anisotropic Heisenberg model, validated by tensor network calculations, revealing a non-trivially correlated dimer ground state and predicting magnetization plateaus, thereby resolving a long-standing puzzle in experimental observations.

Toroidal moments arise from vortex like spin arrangements. These moments can then interact, giving rise to ferri- or ferro-toroidal order, though controlling such order is difficult. Here, the authors demonstrate a ferri-toroidal state in BaCoSiO₄, which under an applied magnetic field exhibits multiple toroidal and metamagnetic transitions.

Synchrotron-based X-ray spectroscopy is a powerful tool to study element-specific magnetism. Here, X-ray detected paramagnetic resonance on molecular quantum bit candidates is demonstrated, paving the way toward the element-specific detection of coherently excited spin superposition states.

Rashba type spin splitting – relevant for spintronics applications - is driven by inversion symmetry breaking but could so far not be realized in all momentum directions in a crystal. Here, the authors report on PtBi₂ that exhibits Rashba spin splitting in all three momentum directions.

Due to its structural simplicity, iron selenide is an attractive system for understanding the electronic mechanism for superconductivity in iron-based materials. A theoretical study now examines the influence of magnetic frustration in this system.

The square-kagome lattice, a variant of the magnetically frustrated kagome lattice, has been recently proposed as a platform for emergent many-body phenomena such as spin liquids. Here, a theoretical study on nabokoite establishes the relevant Hamiltonian for this compound and explains its intricate magnetic behavior, providing predictions for neutron scattering experiments.