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In this manuscript, Finco et al demonstrate the use of a quantum magnetometer based on a single NV centre for all-optical imaging of antiferromagnetic (AFM) spin textures. By exploiting variations of the NV spin relaxation rate, they succeed in imaging AFM domain walls and skyrmions.

Organic semiconductors are attractive candidates for spintronics applications because of their long spin lifetimes. But few studies have investigated how to optimize the injection of spin into these materials. A new study suggests that the metal/organic interface is key.

Magnetic vortices confined to thin films gyrate with a dynamics determined by the vortex–core polarity, which switches when the gyration is fast enough. Fine-tuning these core-reversal oscillations reveals rich nonlinear behaviour, including commensurate and chaotic states.

Anisotropies in the response of ferromagnetic electrodes attached to a gold nanoparticle lead to Coulomb blockade and spin-valve-like magnetoresistance phenomena. Such behaviour could allow the development of magnetically gated single-electron transistors composed of just two terminals.

Single magnetic skyrmions are electrically detected in magnetic multilayers at room temperature, and their main contribution to the signal, which is enhanced for tracks approaching the size of the skyrmions, comes from the anomalous—rather than topological—Hall effect.

A tunnel junction that consists of a ferroelectric barrier layer sandwiched between two electrodes can operate as a fast, low-power and non-volatile nanoscale solid-state memory.

Memristors are devices whose dynamic properties are of interest because they can mimic the operation of biological synapses. The demonstration that ferroelectric domains in tunnel junctions behave like memristors suggests new approaches for designing neuromorphic circuits.

Control over topological antiferromagnetic entities is achieved at room temperature in multiferroic nanodevices using an electric field that induces magnetoelectric coupling to ferroelectric centre states.

A major challenge for the use of skyrmions in information processing is getting them to move consistently, due to the presence of defects, and in a straight line, due to the skyrmion Hall effect. Here, Mallick et al overcome these challenges, demonstrating the motion of skyrmions in the dynamical flow regime in synthetic ferrimagnets.

The authors realize voltage-based magnetization switching and reading in nanodevices at room temperature, through exchange coupling between multiferroic BiFeO₃ and ferromagnetic CoFe, for writing, and spin-to-charge current conversion between CoFe and Pt, for reading.

Controlling chaotic behavior in spintronic devices is promising for signal-processing applications. Here, the authors unveil the symbolic patterns hidden in the magnetization dynamics of a nanocontact vortex oscillator and detail how to control chaos complexity with a single experimental parameter.

Three dimensional topological spin textures, such as hopfions and skyrmion tubes, have seen a surge of interest for their potential technological applications. They offer greater flexibility than their two dimensional counterparts, but have been hampered by the limited material platforms. Here, Grelier et al. look at aperiodic multilayers, and observe a three dimensional skyrmionic cocoon.

Antiferromagnetic skyrmions—which have distinct advantages over skyrmions found in other magnetic systems—are observed at room temperature in synthetic antiferromagnets. These results hold promise for low-power spintronic devices.