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A ferroelectric material is used to switch the uniaxial magnetic anisotropy of an antiferromagnet, with implications for antiferromagnetic spintronics.
The instability of sulfide ions during water oxidation prevents simultaneous evolution of hydrogen and oxygen. An oxysulfide semiconductor photocatalyst, Y2Ti2O5S2, is shown to evolve H2 and O2 via a water-splitting reaction under visible-light irradiation.
An interlayer Dzyaloshinskii–Moriya interaction is observed in a synthetic antiferromagnet, with implications for achieving chiral spin textures in multilayered thin films.
A composition gradient is found to provide the necessary structural inversion asymmetry for a bulk Dzyaloshinskii–Moriya interaction to manifest itself.
Interfacial water structures in electric double layers under bias potentials can impact the electrochemical performance of electrodes. Two structural transitions of interfacial water at electrified Au single-crystal electrode surfaces have now been identified.
An investigation of the structural and transport properties of bilayer graphene as a function of the twist angle between the layers reveals atomic-scale reconstruction for twist angles smaller than a critical value.
Femtosecond pump–probe measurements of Coulomb correlations in WS2/WSe2 heterostructures reveal the interlayer exciton binding energy, determined from the 1s–2p resonance, as well as the dynamics of the conversion of intra- to interlayer excitons.
Molten salts are used as a reaction medium to protect carbide, nitride and boride powders from oxidation during high-temperature synthesis in air, thus avoiding the need to carry out these processes in a vacuum or inert environment.
Charge-transfer states with comparable recombination and charge-splitting rates are shown to be a key ingredient for donor–acceptor organic blends that perform well in both light-emitting and photovoltaic applications.
Resonant inelastic X-ray scattering at the 4d-edge reveals dispersive magnetic excitations in SrRu2O6, providing insight into the origin of its high Néel temperature.
Facile absorption and desorption of hydrogen at palladium surfaces provides a way to define how metal–solute interactions impact properties relevant to energy storage, catalysis and sensing. In situ X-ray diffraction has now been used to track both hydrogen absorption and desorption in palladium nanocrystals.
Confined exciton–polaritons in semiconductor-based quantum wells can give rise to correlations slightly below the level of classical coincidence counts under resonant excitation, such that single or few polariton excitations are sufficient to modify the statistics of the radiation going through the system.
Two-photon correlation measurements in a resonantly excited fibre-cavity polariton system stay below the classical limit for zero time delay, suggesting quantum correlations between the polaritons.
A second-order topological insulator in an acoustical metamaterial with a breathing kagome lattice, supporting one-dimensional edge states and zero-dimensional corner states is demonstrated.