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Antiferromagnetic Weyl semimetals based on Mn₃X (X = Ge, Sn, Ga) kagome compounds exhibit significant electromagnetic responses even in the absence of large magnetization, but optimizing these effects across a wide temperature range is crucial for device applications. Here, the authors demonstrate that Mn₃Sn_1−xGa_x sputtered films offer tunable antiferromagnetic transition temperatures and enhanced anomalous Hall effect, paving the way for optimized antiferromagnetic materials in technological applications.

A Néel-type skyrmion lattice is found to be formed in the lacunar spinel GaV₄S₈—a polar magnetic semiconductor with rhombohedral symmetry and easy axis anisotropy.

Precise control over antiferromagnetic domain configurations and Néel axis orientation is essential for technological advancement of spintronic devices. Here, the authors use epitaxial strain to tailor the magnetic properties of LaFeO₃ thin films, demonstrating a crystal engineering approach which may have much wider applicability.

Antiferromagnets are interesting materials for fast spintronics applications, but control of the antiferromagnetic order has been limited to bulk materials so far. Now, uniaxial strain is shown to align the Néel vector in MnPSe₃ down to the monolayer limit.

Due to their nature antiferromagnets are difficult to probe with conventional magnetometers. The Néel vector of a practically important antiferromagnet, CuMnAs, has now been determined by a femtosecond pump–probe magneto-optical experiment.

Altermagnetism arises from a combination of crystal symmetry and magnetic ordering. For the altermagnetic properties to be clear, and technologically useful, the same crystal variant must be present over the entire sample. Here, He, Wen and coauthors achieve such single variant thin films in RuO₂, confirming the altermagnetic properties via XMLD and transport measurements.

The authors use inelastic neutron scattering to map out the spin excitations of FeSe dewtinned with a uniaxial-strain device. They establish a spin-interaction phase diagram and conclude that FeSe is close to a crossover region between the antiferroquadrupolar, Néel, and stripe ordering regimes.

Magnetic skyrmions are topological spin textures that have potential implications for spintronic devices but greater control over their stability and physical characteristics are first required. Here, the authors study the formation of skyrmions in ferrimagnetic thin films of DyCo₃ and using a combination of X-ray measurements determine them to be of the Néel type.

Antiferromagnets have an inbuilt resilience to external magnetic fields and intrinsically fast dynamics, properties that have garnered interest in the hope that they could be used for antiferromagnet memories. Central to this are Neel spin-orbit torques, which can switch the individual sublattices of the antiferromagnet. Here, Reimers et al demonstrate complete and reversible current induced switching of the Neel vector in Mn₂Au.

Unlike charge currents, pure spin currents do not suffer from joule heating; however, taking advantage of pure spin currents requires the development of pure spin current polarizers. Here, through careful material engineering of LaFeO₃, Chen et al succeed in development a pure spin current polarizer.

The ability to control domain wall motion in ultrathin magnetic wires with an applied current could prove useful in future spintronic devices. Tetienne et al.now directly observe the different domain-wall structures in various magnetic material systems using a scanning nanomagnetometer.

A major advantage of antiferromagnets for applications is the lack of stray fields and insensitivity to magneto-electric perturbations, however, this also makes electric control of AFMs challenging. Here, focusing on a non-collinear AFM, Mn₃Ge/Sn, Wu et al demonstrate fast domain wall motion, with remarkably low current density, and extend our understanding of spin-transfer torques that drive this to noncollinear antiferromagnetic systems.

Recently, spontaneous symmetry breaking was reported in 1D and 2D lattices with long-range interactions on analogue quantum simulators. Here, using a digital quantum annealing algorithm, Hu et al. observe this effect in a tree-like superconducting qubit lattice with short-range interactions at zero temperature.

Cooperative paramagnetism refers to a strongly correlated state without long range magnetic order that occurs in frustrated magnetic systems between the Neel temperature and Curie-Weiss temperature. Here, using resonant elastic magnetic and inelastic x-ray scattering, Terilli et al find a spectrally sharp gapped magnetic excitations that persists above the Neel temperature in Y₂Ir₂O₇, implying a cooperative paramagnetic phase.

Antiferromagnets offer faster operation speed and immunity to stray fields, however, readout of the Neel vector is difficult. Here, Bommanaboyena et al present a heterostructure of a ferromagnet and antiferromagnet, combining easy readout with the benefits of antiferromagnetic spintronics.

A non-orientable surface can mirror reflecting the man travelling on it. Realizing such topological object is fascinating. Here, the authors discover that antiferromagnetic-induced polarization in a solid can realize a non-orientable Roman surface.

Altermagnets, unlike their conventional collinear antiferromagnetic counterparts, allow for an anomalous Nernst response despite their collinear compensated magnetic ordering. Here, Badura et al find such an anomalous Nernst effect at zero magnetic field in the altermagnetic candidate, Mn₅Si₃.

Spherical polar topological structures are of interest as they could enable high-density memory applications; however, such texture formation requires superlattices with delicately balanced boundary conditions to form. Here it is found that these textures can form in free-standing CuInP₂S₆, and that mechanical force can generate high-density domains.

Neural-Network Quantum States are highly effective in describing quantum many-body systems, but they are typically system-specific. Here the authors propose Foundation Neural-Network Quantum States, which can be applied across multiple systems simultaneously, enabling accurate estimation of challenging observables.

Antiferromagnets have attracted interest for spin-based information processing due to their resilience to stray magnetic fields and extremely rapid spin dynamics, however, long range spin wave transport has only been shown in one type of antiferromagnet thus far. Here, Das et al demonstrate long range spin wave transport in antiferromagnetic YFeO3.

In a magneto-electric material, the magnetic and electric properties are coupled. This coupling allows the magnetic order to be controlled by electric stimuli, making magnetoelectric materials promising candidates for new data storage technologies. Here Gu et al demonstrate a magnetoelectric effect in a van der Waals antiferromagnetic CrOCl which persists down to monolayer, and using this realize a multi-state data storage device.

Magnetic excitations in infinite-layer cuprates have been intensively studied. Here the authors use resonant inelastic x-ray scattering and theoretical calculations to study magnons in thin films of SrCuO₂, finding distinct magnon dispersion attributed to renormalization due to quantum fluctuations.

Stable, single magnetic skyrmions are demonstrated at room temperature in ultrathin cobalt nanostructures.

Magnetoelectric materials combine ferroelectric and magnetic properties through a coupling of the spin and lattice degrees of freedom. Here, magnetoelectric bismuth ferrite is found to simultaneously undergo both a magnetic and a ferroelectric transition at the same temperature.

Recent theoretical studies indicate that the Kitaev model may be realized in framework materials exhibiting extended superexchange pathways. Here the authors report experimental evidence showing that the material requirements for a Kitaev quantum spin liquid are satisfied in a inorganic framework material.

One challenge for encoding information in chiral spin textures is how to read the information electrically. Here, Lima Fernandes et al. show that chiral spin textures exhibit a magnetoresistance signature which could allow for efficient electric readout of the chirality and helicity.

Nonlinear transport has recently been shown to allow efficient detection of the Néel vector, however, antiferromagnets hosting nonlinear transport are assumed rare, due to the required strong spin-orbit coupling. Here, Zhu, Li and coauthors find that the magnetic order itself can yield large nonlinear transport.

Nanoscale imaging and control of altermagnetism in manganese telluride is achieved, paving the way for the experimental realization of the theoretically predicted field of altermagnetism.

Obtaining quantitative information on nanoscale magnetic structures is a challenge. Here, the authors apply scanning probe magnetometry based on a single nitrogen-vacancy defect in diamond to quantitatively map the stray magnetic field emitted by a vortex state in a ferromagnetic dot.

Non-reciprocal charge transport refers to the different resistance between positive and negative current, and is fundamental in a variety of applications, for instance, current rectification. Some materials exhibit intrinsic nonreciprocal transport, but manipulation of this can be challenging. Here, the authors demonstrate large non-reciprocal transport which can be switched magnetically, is stacking dependent, and can be tuned via an applied gate voltage.

Fractional magnetic excitations are thought to exist even in the simplest multi-dimensional spin models, but attention has focused on frustrated systems. Such excitations have now been seen in an unfrustrated two-dimensional quantum antiferromagnet.

One major challenge for antiferromagnetic spintronics is how to control the antiferromagnetic state. Here Jani et al. demonstrate the reversible ionic control of the room-temperature magnetic anisotropy and spin reorientation transition in haematite, via the incorporation and removal of hydrogen.

Unlike the other iron-based superconductors, the parent compounds of the alkaline iron selenide superconductors are insulators. Dai and colleagues examine the spin-wave excitations in these materials and uncover evidence for a common magnetic origin for all iron-based superconductors.

Domain walls in ferroelectrics can lead to phenomena different from the bulk. Here the authors achieve polarization control of charged domain walls in improper ferroelectrics by magnetic fields that convert neutral into charged domain walls.

Cold atoms coupled to photonic crystals constitute a platform for exploring many-body physics. Here the authors study the effect of coupling between the atomic internal degrees of freedom and motion, showing that such systems can realize extreme spin-orbital coupling and uncover a rich phase diagram.

In ultrathin BiFeO₃ films on LaAlO₃, compressive strain of the substrate induces a polar skyrmion lattice with nanometre periodicity.

Wafer-scale realization of a nanoscale magnetic tunnel junction hosting a single, ambient skyrmion enables its large readout, efficient switching, and compatibility with lateral manipulation, and thereby provides the backbone for all-electrical skyrmionic device architectures.

Few of the known antiferromagnetic materials are suitable for use in spintronic devices. Here, the authors show that Mn₂Au, which was believed to be paramagnetic, is an antiferromagnet, combining high Néel temperature and in-plane anisotropy, thus demonstrating its potential for antiferromagnetic spintronics.