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All-van der Waals multiferroic tunnel junctions exhibit four non-volatile resistance states with full layer tailorability, enabling up to 10⁶% tunnelling electroresistance, 10⁴ A cm⁻² ON-state current density and room temperature operation.

NiPS₃ is a van der Waals antiferromagnetic semiconductor where the exciton formation is strongly influenced by the magnetic ordering. Previous studies have been limited to magneto-optical approaches, but here, Lebedev, Gish and coauthors succeed in making field effect transistors that operate below the Néel temperature and observe an ultranarrow electroluminescence with a high degree of linear polarization.

A van der Waals heterostructure made from atomic layers of ferroelectric CuCrP₂S₆ and ferromagnetic Fe₃GeTe₂ can offer reversible, non-volatile ferroelectric control of two-dimensional magnetism.

Here the authors report an allotrope to the nanocarbon family, Graphene-P-phenyl-Graphene, for potassium-ion batteries.

The authors synthesize rock-salt-structured LiMnSbTe₃, in which Sb₂Te₃-type van der Waals-like gaps are embedded as ordered local structures that both scatter phonons and enhance charge-carrier transport.

Here, the authors explore spatially indirect excitons in van der Waals heterostructures and observe long-distance spin transport. The mechanism of protection against the spin relaxation is based on the suppression of scattering.

A galvanic strategy enables the intercalation of diverse molecular cations into bulk and few-layer van der Waals crystals under mild conditions, yielding 50 organic–inorganic superlattices. This method enables the definition of vertical and lateral intercalation heterostructures, opening avenues for the device integration of hybrid quantum materials.

Spatial distribution of the photoluminescence of interlayer excitons in van der Waals heterostructures comprising MoSe₂ and WSe₂ monolayers and encapsulated in rather thick hexagonal boron nitride is investigated, revealing interlayer exciton long-range transport with 1/e decay distances reaching and exceeding 100 μm.

In this work, the researchers realize the current-induced motion of Néel type chiral domain walls via spin-transfer-torque in the pristine van der Waals ferromagnet Fe₃GeTe₂ and via spin-orbit-torques in heterostructures with platinum or tungsten.

A nano-optical probe of the Purcell effect in a van der Waals waveguide is demonstrated, exploiting its highly confined infrared waveguide modes and the capacity for infrared emission in the monolayer limit of atomically layered van der Waals materials.

CrI₃ is a popular van der Waals magnet that exhibits anomalous magnetic properties between bulk and thin layers due to different crystal symmetry. Here, the authors report the coexistence of different magnetostructural phases over the entire range of temperatures, solving a long-standing puzzle.

The efficiency of nonlinear optical processes in 2D materials is often reduced by weak light-matter interactions and crystal symmetry constraints. Here, the authors report the enhancement of classical second-harmonic generation in hexagonal boron nitride and quantum spontaneous parametric down-conversion in NbOCl₂ flakes by combining them with Au or SiO₂/Au substrates.

The family of two-dimensional materials is ever growing, but greater functionality can be realized by combining them together. Here, the authors report the direct synthesis of multijunction heterostructures made from graphene, tungsten diselenide and either molybdenum disulphide or molybdenum diselenide.

Using pump-power-dependent exciton absorption spectroscopy, the authors reveal magnon-mediated exciton–exciton interactions and a consequent nonlinear optical response in CrSBr, an antiferromagnetic semiconductor.

Compact sources of entangled photons are desired for quantum communication, computing, and cryptography. Here, the authors report high entangled photon pair generation rates in rhombohedral boron nitride, showing its potential as a tunable platform for Bell state generation.

In most van der Waals ferromagnets, reducing the number of layers reduces the Curie temperature. Here, Chuang et al., find that Cr₂Se₃ has an increased Curie temperature for thinner samples, and through angle-resolved photoemission spectroscopy they attribute this to differences in the valley carrier density in different thickness samples.

Polar skyrmions are a topological polarization texture. While they have now been detected in numerous material systems, near universally these have required careful strain engineering. Here, Xue, Zhang, Zheng, Tong, Wang and coauthors observe polar skyrmions in the van der Waals ferroelectric CuInP2S6, without strain-engineering.

The control of molecular chirality is of great interest in stereochemistry and biochemistry. Here, the authors show how to alter the chirality dynamics of a single molecule through tip-induced van der Waals interactions.

In transition metal dichalcogenide monolayers, the spin and valley degrees of freedom are strongly coupled. Here, the authors engineer a WSe₂/MoSe₂ heterostructure in which inter-valley transitions of interlayer excitons exhibit a giant splitting and near-unity polarization in a magnetic field.

Integrating van der Waals (vdW) dielectrics with 2D semiconductors is a critical step in the fabrication of improved field effect transistors. Here, vdW MnAl₂S₄ is used as a gate insulator in MoS₂-based transistors, achieving low gate leakage and hysteresis, and thermal stability.

An asymmetric van der Waals heterostructure device, which is composed of graphene, hexagonal boron nitride, molybdenum disulfide and molybdenum ditelluride, can function as a high-performance diode, transistor, photodetector and programmable rectifier.

The authors demonstrate broadband terahertz emission from a two-dimensional van der Waals ferroelectric semiconductor, NbOI₂, that originates from its efficient optical rectification and apply it to realize in situ near-field terahertz spectroscopy.

An optical method images nonlinear optical processes in waveguides with femtosecond and nanometre precision. The approach is used to achieve phase-matched second-harmonic generation in 3R-MoS₂ waveguides.

Operando transmission electron microscopy imaging reveals that modifying interlayer rotations alters both the spatial arrangement and switching dynamics of polar domains in artificially stacked trilayers of WSe₂.

Authors uncover room-temperature skyrmions in 2D van der Waals material, attributing their presence to Fe-deficiency-induced symmetry breaking, enabling topological Hall effect and small Néel-type skyrmions with femtosecond laser writability.

The combination of strong light-matter interactions and controllable magnetic properties make magnetic semiconductors attractive for both fundamental physics and the development of devices. Here, Hendriks et al show how the optically driven magnetization dynamics in Cr₂Ge₂Te₆ can be controlled via electrostatic gating.

The photonic applications of hyperbolic phonon polaritons (HPhPs) in anisotropic van der Waals materials are currently limited by their low tunability. Here, the authors report the static and ultrafast wavevector modulation of HPhPs in hexagonal boron nitride by tuning the plasma frequency of doped semiconductor substrates.

Here, the authors investigate the interfacial charge/energy transfer dynamics in a WSe₂/graphene heterostructure. They unveil an energy transfer mechanism from WSe₂ to graphene mediated by an interfacial Meitner-Auger process, resulting in a transient hole distribution in the Dirac cone at energies larger than the photon energy of the optical excitation.

The authors embed a multiple quantum-well WS₂ heterostructure in a planar microcavity and show the systematic control of the normal mode coupling-strength. They find a strong enhancement of the characteristic time scale, which they attribute to long-lived dark excitations emerging in the structure.

High-quality van der Waals contacts between metals and two-dimensional semiconductors can be created using a selenium buffer layer that is deposited before the metal deposition process.

Van der Waals materials are composed of layers held weakly by van der Waals forces. This feature allows different materials to be combined into heterostructures, with fewer restrictions on growth and lattice matching. Here, Zhu et al make use of this feature to create a van der Waals magnetic tunnel junction with a semiconducting spacer, allowing for improved tunability and reduced device thickness.

Polaritons formed by moiré excitons in heterobilayers of transition metal dichalcogenides exhibit strong nonlinearity owing to quantum confinement by the tunable moiré lattice potential.

Van der Waals magnetic materials are composed of atomically thin magnetically ordered layers stacked together. Here, aiming to control magnetism locally, Klein et al use an electron beam to create small regions where van der Waals layers are orientated perpendicular to the rest of the sample.

Hyperbolic exciton polaritons (HEPs) are anisotropic light-matter excitations with promising applications, but their steady-state observation is challenging. Here, the authors report experimental evidence of HEPs in a van der Waals magnet, CrSBr, via cryogenic infrared near-field microscopy.

The recent discovery of magnetism in van der Waals materials down to the monolayer seemed to challenge a long-established theoretical result, the Mermin-Wagner theorem, which states that long-range magnetic order does not exist in two dimensions with short-range interactions. Here, using state of the art computational methods, the authors show that for sample sizes usually used in experiments, the exchange interactions at the finite size is enough to stabilize magnetic order without any magnetic anisotropy.

Understanding the mechanism by which magnons—the quanta of spin waves—propagate is important for developing practical devices. Now it is shown that long-range dipole–dipole interactions mediate the propagation in a van der Waals antiferromagnet.

Layered thio- and seleno-phosphate ferroelectrics show promise for next-generation memory but have thermal stability issues. Using the electric field-driven phase transition in antiferroelectric CuCrP2S6, the authors introduce a robust memristor, emphasizing the potential of van der Waals antiferroelectrics in advanced neuromorphic computing.

The controlled manipulation of the topological phases of electronic materials is a central goal of modern condensed matter research. Here, the authors demonstrate controllable switching between two distinct topological phases in a layered ferromagnet via thermal cycling.

CrI3 is a van der Waals material which exhibits magnetic ordering down to the monolayer limit. Here, using ultrafast optical spectroscopy, Padmanabhan and Buessen et al. investigate the coupling between the magnetically ordered spins and lattice distortions, finding a coherent spin-coupled phonon mode.

Artificial stacking of van der Waals materials is an effective method to design and investigate emergent physical properties in condensed matter systems. Here, the authors characterize the natural twisted layer structure of CrI₃, showing its dependence on the sample fabrication process and its implications for the magnetic properties of the material.

The spontaneous topological Hall effect, combining non-coplanar antiferromagnetic order with finite scalar spin chirality in the absence of a magnetic field, is now experimentally demonstrated for the triangular lattice compounds CoTa₃S₆ and CoNb₃S₆.

We present comprehensive thermodynamic and spectroscopic evidence for an antiferromagnetically ordered heavy-fermion ground state in the van der Waals metal CeSiI.

Here, the authors report the realization of light-emitting field-effect transistors based on van der Waals heterostructures with conduction and valence band edges at the Γ-point of the Brillouin zone, showing electrically tunable and material-dependent electroluminescence spectra at room temperature.

Two-dimensional material heterostructures enable unique electronic features by introducing periodic potentials. Here, Gobbiet al. use a monolayer supramolecular lattice with a tunable one-dimensional periodic potential to modify the electronic structure of graphene.

Electrons can tunnel through thin ferromagnetic CrBr₃ barriers, sandwiched between graphene electrodes, via the emission of magnons, which suggests that these magnetic tunnel barriers could be used for spin injection.