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This study applies magnetic fields in selected in-plane directions to disentangle the mechanisms underlying the anomalous Hall effect in a representative noncollinear antiferromagnet.

Topological insulators possess dispersionless electronic surface states with perpendicular spin-momentum locking which may be utilised in spintronic devices. Here, the authors demonstrate p–n junctions formed from two topological insulator thin films, tuning the junction type by film thickness.

Quasicrystals promise exciting technological advances in optical devices, but their formation mechanism is yet not fully understood. Here, the authors describe a two-dimensional dodecagonal fullerene quasicrystal, forming on a Pt₃Ti(111)-surface due to the complex adsorption-energy landscape.

If single molecules are to be used in spintronic devices, it is necessary to interlink molecular spin states and charge transport. Here, the authors approach this goal by directly accessing highly spin-polarized hybrid states of a molecular complex of an early lanthanide on a metal surface.

Exploiting topological insulator surface states in electronic devices requires an understanding of the factors that affect transport. Here, the authors use scanning tunnelling potentiometry to determine the contributions of different kinds of surface defects to the electrical resistance.

The authors report a memristor-based system that analyzes raw analog signals from a genomic sequencer directly in memory. By bypassing slow data conversion, the system achieves substantial improvements in speed and efficiency, enabling real-time, on-site genomic analysis.

Electron magnetic circular dichroism gives element-selective information on spin and orbital magnetic moments, but its low intensity has limited its use for nanoscale studies. Using a statistical analysis method, Muto et al.show that this can be overcome with nanometre-sized electron beams.

Spin dynamics in magnetic materials can be driven by ultrafast light pulses, resulting in transient magnetization changes on femtosecond timescales. Rudolphet al. find that in magnetic trilayers the magnetization of one layer can be enhanced by superdiffusive spin currents from adjacent layers.

It has been predicted that electron beam probes may allow for the imaging of magnetism with atomic-scale resolution. Here, the authors demonstrate a scanning transmission electron microscopy method capable of resolving magnetic contrast from individual atomic planes.

Friedel oscillations are ripples in the electron density surrounding a charge impurity. Bouhassoune et al. now use first-principle calculations to show that Friedel oscillation surrounding an oxygen impurity in a ferromagnetic film can be engineered and amplified by choice of substrate and film thickness

Identifying reaction pathways is a major challenge in chemistry, and proves particularly difficult for surface reactions. Here the authors show that imaging the molecular orbitals with photoemission tomography provides insight into the structure of surface intermediates allowing their identification.

An international team of researchers finds high potential for improving climate projections by a more comprehensive treatment of largely ignored Arctic vegetation types, underscoring the importance of Arctic energy exchange measuring stations.

Monolayer graphene can support the quantum Hall effect up to room temperature. Here, the authors provide evidence that graphene encapsulated in hexagonal boron nitride realizes a novel transport regime where dissipation in the quantum Hall phase is mediated predominantly by electron-phonon scattering rather than disorder scattering.

Heterogeneous chemical processes are vital for many applications, but the crucial interfaces involved are difficult to probe experimentally with elemental and chemical-state specificity. Here, the authors present a photoelectron spectroscopy-based method for studying such interfaces with sub-nanometre accuracy and under realistic pressure conditions

When a molecule interacts chemically with a metal, its orbitals hybridise with metal states to form the new eigenstates of the coupled system. Here, the authors show that in addition to overlap in real space and energy, hybridizing states must fulfil a momentum-matching condition.

Exsolution enables the formation of active catalytic nanoparticles, but their thermal stability remains limited. Here, the authors use secondary-electron imaging at atomic resolution to directly visualize the coarsening of exsolved nanoparticles.

Magnetic stability of holmium atoms on a platinum(111) surface has recently been reported, raising prospects for atomic-scale spintronics, however contradictory results have since emerged. Here, Steinbrecher et al.find evidence for an invisibility of the holmium spin to scanning tunnelling spectroscopy techniques which challenges recent results.

Magnetite provides a valuable record of the Earth's geomagnetic history. Here, Almeida et al. combine electron microscopy and energy-loss spectroscopy to study the effects of in situoxidation on the magnetization fidelity and crystalline phase of pseudo-single domain magnetite grains.

In the Kondo effect, a bath of conduction electrons screens a localized magnetic moment. Here, the authors demonstrate Kondo screening of a normally isolated 4f-like moment in a magnetic molecule on a Cu(001) surface that is modulated by strong ligand-mediated coupling.

The potential use of graphene in spintronic devices is limited by its weak spin–orbit coupling. Marchenko et al. report an enhancement of the spin splitting in graphene due to hybridization with gold 5dorbitals, showing a very large Rashba spin–orbit splitting of about 100 meV.

Electron energy-loss magnetic chiral dichroism enables the measurement of the local magnetic properties of a material using a transmission electron microscope, but is limited to signals in the electron-beam direction. Here, the authors demonstrate a method to extend this to in-plane magnetic signals too.

The experimental investigation of relaxation times in graphene quantum dots has long been hindered by the limited tunability of these devices. Here Volk et. al.employ a device design to study this problem and report charge relaxation times of around 60–100 ns.

In the absence of matching substrates, the growth of oxide thin films can be challenging. Here, the authors demonstrate the growth of EuO thin films via a topotactic reaction, where a chemical reaction transforms a single crystal of one phase into that of another.

To determine the topological character of a magnetic structure, one has to rely on techniques based on spin magnetism. Here, the authors study chirality-driven orbital moment physics and propose a new experimental protocol for the identification of topological magnetic structure, based on soft X-ray spectroscopy.

Materials possessing anisotropic spin exchange interactions can support skyrmion quasiparticle spin textures, which may be exploited in nanomagnetic devices. Here, the authors predict the appearance of skyrmions in multilayered thin films of biatomic Fe sandwiched between 4d and 5dtransition metals.

The position of an electron in a molecule is defined at the quantum-mechanical level by its wavefunction. Wießner et al. demonstrate a technique for imaging both the wavefunction amplitude and phase by measuring the distribution of photoelectrons generated by circularly polarized light.

Orbital accumulation, induced by the orbital Edelstein effect or orbital Hall effect, offers the potential to manipulate magnetization, and crucially, they can be large even in light elements. Here, Gao et al. demonstrate the Onsager reciprocity of orbital transport.

Tilgner et al. demonstrated the formation of the quantum spin Hall insulator bismuthene on SiC, intercalated underneath a protective graphene layer. A hydrogen-induced orbital filtering effect is the driving force behind this reversible phase transition.

Cosmic rays flying through superconducting quantum devices create bursts of excitations that destroy qubit coherence. Rapid, spatially resolved measurements of qubit error rates make it possible to observe the evolution of the bursts across a chip.

Precise control of charge and spin states in quantum dots is often challenging. Here, the authors show systematic manipulation of the electron occupation in graphene nanoribbons laying on MgO.

Lasing is experimentally demonstrated in a direct bandgap GeSn alloy, grown directly onto Si(001). The authors observe a clear lasing threshold as well as linewidth narrowing at low temperatures.

Nanoionic memristive devices achieve stable quantum conductance at room temperature, enabling SI-traceable resistance standards and advancing self-calibrating electronics toward the implementation of national metrology institute services on chip.

The shape and energy of frontier orbitals determine the reactivity of molecular systems. Combining orbital tomography based on photoelectron spectroscopy with electron diffraction and DFT, the authors investigate a complex multi-configurational adsorbate system revealing adsorptions geometries and hierarchy and geometry of molecular orbitals.

Topologically trivial and Majorana bound states can show spectral weight near the ends of a chain of magnetic atoms on a superconductor. Here, the authors disentangle the two contributions by augmenting a spin chain with orbitally-compatible nonmagnetic atoms, where a persistent zero-energy spectral weight at the transition between the two parts is observed.

The conduction electron and magnon interactions are essential for the understanding and development of spintronics and superconductivity. Here the authors show a deep binding energy kink in spin-resolved photoemission spectra which is understood as a signature the many-body spin flip excitation in Fe single crystal thin film.

Manganese oxide self-organizes on Ir(100) surfaces to form arrays of one-dimensional chains, providing a model system to study emergent magnetic behaviour. Schmitt et al. demonstrate they host chiral magnetism mediated by Dzyaloshinskii–Moriya-enhanced RKKY interactions.

A deterministic correction of errors caused by qubit loss or leakage outside the computational space is demonstrated in a trapped-ion experiment by using a minimal instance of the topological surface code.

Clear understanding of the influence from material inhomogeneities and defects is one of the keys to achieve reliable Skyrmion based devices. Here the authors report their first principles studies on the interaction of single skyrmions with single-atom impurities and reveal its universal shape originated from the defect’s electron filling.

Two Co single crystal surfaces remain metallic up to 1 bar during Fischer-Tropsch synthesis. The observed intermediates support the carbide mechanism as the reaction pathway. By adding and removing CO we can follow the dynamics of the (dis)appearance of intermediates.

Exploiting the intrinsic response of magic-angle twisted bilayer graphene to resonant terahertz radiation, the interplay between electron interactions and quantum geometry is studied in such flat-band systems.

Magnons are excitations of magnetic materials that can have topological properties similar to those of electrons. Here, the authors show that the magnons of the bulk ferromagnet Mn₅Ge₃ are topological and can be controlled with a magnetic field.

A free-standing two-dimensional sheet composed solely of Mo atoms shows metallic character, with an electrical conductivity of ~940 S m⁻¹.

The spin–orbit interaction can be used to optically generate and control terahertz electric photocurrents in metallic ferromagnetic heterostructures.