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Molecular sieves made out of cryptomelane-type manganese oxide (OMS-2) have been widely studied, but synthesizing them with a hierarchical nanostructure and precise crystal orientation is very challenging. It is now demonstrated that pulsed-laser deposition of OMS-2 on SrTiO₃ leads to the spontaneous formation of three-dimensional arrays of parallel and inclined fibres. The results open the way for lattice-engineered synthesis of multilayer materials.

Semi-metallic single crystals of antimony can be deposited using molecular beam epitaxy on molybdenum disulfide to create ohmic contacts with resistance of under 100 Ω µm at a contact length of 18 nm.

Using experimental and atomistic simulations, the authors show that optical excitation lowers the energy barrier for domain wall motion. Combined with the imprint field, this effect enables subsecond optical control of domain switching in ferroelectric membranes.

Coating additive solutions onto wet perovskite films in situ enables flexible all-perovskite tandem solar cells with a certified power conversion efficiency of 23.0% for a module with an aperture area of 20.26 cm². The modules maintain 97% of their initial efficiency after 10,000 bending cycles with a 10 mm radius.

The authors study the effects of heterovalent doping on superconducting bilayer nickelate thin films.

A new form of momentum-selective electron energy-loss spectroscopy enables the element-resolved imaging of frequency- and symmetry-dependent vibrational anisotropies with atomic resolution.

Two types of skyrmion-like polar nanodomain are observed in oxide bilayers transferred onto silicon, and these nanodomains, with distinct resistive behaviour, can be converted to each other under an external electric field.

Microscale ferroelectric topological textures in freestanding BaTiO₃ nanomembranes enable dynamic vortex light manipulation via nonlinear spin-to-orbit conversion.

The authors study nickelate superconductor Nd0.8Sr0.2NiO2 by angle-dependent transport. They find that the superconducting phase stiffness is anisotropic, and that electrical conductivity peaks along the direction with maximized phase stiffness.

The authors realize low-pressure-driven polarization switching in PbTiO₃ membranes by leveraging their structural tunability and substrate elasticity, enabling ferroelectric field-effect transistors on silicon, operatable mechanically and electrically.

Polar skyrmions are of interest for nanoelectronics due to their exotic properties. However, so far, these are metastable states requiring a delicate balance of boundary conditions to form in heterostructures. In ferroelectric and antiferroelectric solid solutions, skyrmionic textures are observed to form in both bulk and film.

Using a mixture of 4-fluorophenethylamine and 4-trifluoromethyl-phenylammonium to create a tailored 2D perovskite layer reduces the inhomogeneity at the top interface of all-perovskite tandem cells and results in the highest efficiency reported so far.

The large-scale fabrication of twisted van der Waals heterostructures remains challenging due to the formation of defects and contaminations during the transfer process. Here, the authors report a transfer method to fabricate graphene-based van der Waals superlattices at the wafer scale, showing controllable twist angles and robust quantum Hall effect.

Freestanding perovskite oxides pave the way to novel flexural properties. Here, the authors observe the nanoscale strain gradient induced flexoelectric polarization with an unusual flexo-expansion/shrinkage effect in freestanding ferroelectric oxide.

The recent observation of superconductivity in nickelate thin films has attracted a lot of attentions. Here, authors report single particle tunneling spectra on the superconducting nickelate thin films revealing two types of gap feature with one V-shape and the other a full gap.

Integrating ferroelectric perovskite oxides on Si is highly desired for electronic applications but challenging. Here, the authors show emergent in-plane ferroelectricity and promising nonvolatile memories based on resistive domain wall in BaTiO₃/Si.

The electrical contact of two-dimensional transistors is pushed close to the quantum limit by hybridization of the energy bands with antimony; the contacts have low contact resistance and excellent stability.

The epitaxial growth of bilayer molybdenum disulfide on sapphire enables the fabrication of field-effect transistor devices with improved performance in carrier mobility and on-state current over traditional monolayer films.

A real-space imaging technique that combines scanning transmission electron microscopy with an angle-resolved pixellated fast-electron detector is used to image the charge distribution in SrTiO₃, BiFeO₃ and the junction between them.

Unidirectional alignment of MoS₂ domains during epitaxial growth on C/A sapphire enables the realization of large-area MoS₂ single crystals.

Ultrathin freestanding crystalline films of transition-metal oxide perovskites are fabricated and transferred to various substrates, proving their potential for exploring emergent 2D correlated phases.

A new family of tunable microwave dielectrics with unparalleled performance at frequencies up to 125 GHz at room temperature has been created, using dimensionality to add and control a local ferroelectric instability in a system with exceptionally low dielectric loss.