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The Einstein-de Haas effect is a manifestation of the conservation of angular momentum, causing a magnetic object to rotate as its magnetization state is changed. Here, the authors demonstrate this effect at the single spin level for a molecular magnet suspended on a nanomechanical resonator.

Femtosecond time-resolved X-ray diffraction reveals that in the ultrafast demagnitization of ferromagnetic iron, about 80% of the angular momentum lost from the spins is transferred to the lattice on a sub-picosecond timescale.

Quantum oscillations in the three-dimensional topological semimetal CoSi are reported, where selected oscillation frequencies have no corresponding extremal Fermi surface cross-sections, representing instead oscillations of the quasiparticle lifetime.

Phonons are quanta of the vibrations of the lattice in solids. They can carry angular momentum and allow an emergent chirality. This Perspective defines various types of chiral phonon and classifies the previously observed manifestations of them.

GeSn alloys hold promise for spintronics and quantum computing due to their scalable fabrication and spin manipulation capabilities. Here, the authors study a two-dimensional hole gas in a Ge/GeSn quantum well, revealing enhanced spin-orbit interactions and g-factors, providing key insights for designing GeSn-based spintronic devices.

Screening by a graphite gate placed at 1 nm proximity to graphene produces transformative improvement in its electronic quality, reducing charge inhomogeneity by two orders of magnitude.

The two-dimensional atomic layers of black phosphorus may be exfoliated to create devices with desirable electronic transport properties. Here, the authors observe two-dimensional quantum transport in black phosphorus quantum wells, protected from oxidation by encapsulation in a polymer layer.

A study of several longitudinal birth cohorts and cross-sectional cohorts finds only moderate overlap in genetic variants between autism that is diagnosed earlier and that diagnosed later, so they may represent aetiologically different conditions.

Superconductivity is induced in an accidental Dirac semimetal via the proximity effect.

Interact-omics, a high-throughput cytometry-based framework, resolves the cellular interaction landscape.

Electron hopping in geometrically frustrated lattices can result in a rich variety of unusual behaviours. Now, the orbital arrangement in a van der Waals metal with a non-frustrated, primitive lattice is found to show similar effects.

There is a long-standing experimental effort to observe field-induced correlated states in three-dimensional materials. Here, the authors observe an unconventional Hall response in the quantum limit of the bulk semimetal HfTe₅ with a plateau-like feature in the Hall conductivity.

Theory predicts that phonons—quanta of lattice vibrations—can carry finite angular momentum and thus influence physical properties of materials. Now phonons with angular momentum have been seen in tellurium with a chiral crystal structure.

Quantum oscillations serve as an important probe of electronic structure of quantum materials. Yang et al. study quantum oscillations in the electronic specific heat of natural graphite, unveiling a double-peak structure absent in commonly used theory, and show its utility in determining the Landé g-factors.

The topological character of electrons in semimetals subtly influences their bulk properties, leading typically to weak experimental signatures. Here, Moll et al. report a distinctive anomaly in the magnetic torque upon entering quantum limit state in the Weyl semimetal NbAs, which only appears due to the presence of Weyl fermions.

Superconductor–semiconductor hybrid systems can bring together physical properties that are promising for fast and coherent quantum technology. Here, Hendrickx et al. realize such a system in planar germanium heterostructures demonstrating excellent quantum dots and tunable Josephson supercurrents.

Measuring the bulk power laws of Luttinger liquids in semiconductors remains challenging. Here, the authors demonstrate the dominance of the end-tunneling effect in two fairly distinct Luttinger liquids coexisting in a single quantum wire.

A 3D quantum Hall effect has been reported in Dirac semimetal ZrTe₅ due to a magnetic-field-driven Fermi surface instability. Here, the authors show evidence of quasi-quantized Hall response without Fermi surface instability, but they argue that it is due to the interplay of the intrinsic properties of ZrTe₅ electronic structure and Dirac semi-metallic character.

Experiments on YBa₂Cu₃O_6.51 reveal more than one carrier pocket, and evidence is found for the existence of a much larger pocket of heavier mass carriers having a thermodynamically dominant role in this hole-doped superconductor.

Using a transposon-based approach to create a set of large genomic rearrangements, Dauban et al. demonstrate that interactions of lamina-associated domains with the nuclear lamina involve multiple contacts of varying strength.

Magneto-oscillations have revealed many interesting phenomena in graphene and quantum Hall systems, but they are typically measured at low currents and in equilibrium. Here, the authors report several non-equilibrium quantum effects observed in magneto-oscillations in graphene at high currents.

The physical properties of organic metals have generally been described in terms of a highly correlated Luttinger liquid. Using angle-resolved photoelectron spectroscopy, Kisset al. measure the Fermi surface of (BEDT-TTF)₃Br(pBIB), and find that, in contrast to other systems, it can be described as a Fermi liquid.

The observation of a negative Hall resistance in the magnetic-field-induced normal state of underdoped 'YBCO'materials, which reveals that these pockets are electron-like rather than hole-like. It is proposed that these electron pockets most probably arise from a reconstruction of the Fermi surface caused by the onset of a density-wave phase, as is thought to occur in the electron-doped copper oxides near the onset of antiferromagnetic order.

Electrons trapped to a two-dimensional plane can exhibit many exotic properties. Here, the authors use a technique that measures entropy per electron to explore the evolution of such a system from the Fermi liquid regime to a previously unexplored regime of a strongly correlated charged plasma.

Multifold fermions promise a solid-state platform for accessing and studying the effects of the chiral anomaly beyond Weyl fermions. Here, the authors identify multifold fermions in magnetotransport in the chiral semimetal CoSi.

It is widely believed that high-field superconductivity in heavy fermion metals is sustained only when the effective mass of its conduction electrons diverge. Measurements of magnetically driven changes in the electronic topology of URhGe suggest it is not divergence of the effective mass to infinity but a vanishing of the Fermi velocity to zero that supports this behaviour.

The observation of a superconductive current flowing through a topological insulator is considered the first step towards the observation of the elusive Majorana fermions. This is now achieved in a superconductor/topological insulator/superconductor junction in which direct evidence of Josephson supercurrents is reported.

Ferromagnetic systems rarely display a large or non-saturating magnetoresistance, due to the low Fermi velocity of the predominant charge carrier. Here, the authors show that MnBi, a ferromagnet, bucks this trend, showing both large and non-saturating magnetoresistance, and high charge carrier motilities.

At sufficiently strong magnetic fields and low temperatures, electrons assume a quasi-one-dimensional quantum state that is challenging to observe. Here, Bhattacharya et al. report on electron transport in lightly-doped single crystals of SrTiO₃deep in this extreme quantum limit.

A prototypical kagome metal with magnetic and topological properties is identified.

The authors study the formation and characteristics of a Majorana metallic quantum spin liquid state in Kitaev’s honeycomb model under a moderate external magnetic field. This state represents a novel class of gapless quantum spin liquids stabilized by magnetic field.

URu₂Si₂ undergoes a prominent phase transition to an ordered state of unknown nature. Using high-resolution 3D ARPES, Bareille et al. image an abrupt symmetry reconstruction of its heavy-fermion electronic structure that could explain the origin of the ordered state and its missing entropy.

A genetic-algorithm approach to analysing quantum oscillations in a high-temperature superconductor reveals that quasiparticles behave as nearly free spins—split into spin-up and spin-down populations, known as the Zeeman effect.

The vertebrate brain forms during embryonic development through mechanical processes that are precisely coordinated in space and time. Here, the authors uncover how extrinsic forces regulate tissue flows and cellular rearrangements to shape the early neural plate during zebrafish gastrulation.

Regioselective functionalization of aliphatic carbon–hydrogen bonds is achieved using frustrated radical pairs generated from disilazide donors and an N-oxoammonium acceptor.