jinzhitong

Nature Synthesis, Published online: 15 August 2022; doi:10.1038/s44160-022-00130-4

Preparing two-dimensional heterolayers by vertically stacking chemically different layers with multiple anions remains challenging. Now, a general approach for the synthesis of heterolayered oxychalcogenides using molten hydroxides as unconventional solutions for the rapid stacking of oxide and chalcogenide layers with precise composition control is demonstrated.

Nature Synthesis, Published online: 15 August 2022; doi:10.1038/s44160-022-00134-0

The integration of two-dimensional semiconductors and arbitrary materials or architectures offers the possibility to enhance the functionality of a material and improve device performance. Now, a general synthesis route is reported for heteroepitaxial growth of semiconducting 2H-MoTe2 films on arbitrary single-crystal substrates and three-dimensional architectures without the limitation of lattice matching and a planar surface.

Nature Synthesis, Published online: 17 August 2022; doi:10.1038/s44160-022-00132-2

Targeting 2D heterolayers by vertically stacking chemically different layers is a synthetic challenge. A generic and effective approach for synthesizing heterolayered oxychalcogenides using molten hydroxides as unconventional reaction media is introduced. This approach enables the rapid stacking of oxide and chalcogenide layers with precise control of the composition.

Nature Physics, Published online: 15 August 2022; doi:10.1038/s41567-022-01700-1

A superconducting diode effect is observed at zero magnetic field in twisted trilayer graphene. This suggests that time-reversal symmetry is intrinsically broken and leads to pairing between electrons with non-zero centre-of-mass momentum.

Nature Nanotechnology, Published online: 16 August 2022; doi:10.1038/s41565-022-01192-3

Suspensions of 2D hexagonal boron nitride show an anomalously large specific Cotton–Mouton coefficient, enabling the fabrication of a magnetically tuneable and stable birefringent optical device. This device serves as a transmissive light modulator with wavelengths entering the ultraviolet (UV)-C region, representing a technological advance in deep-UV modulation.

Nature Nanotechnology, Published online: 18 August 2022; doi:10.1038/s41565-022-01185-2

Polaritonic topological transitions of the isofrequency dispersion contour are observed in a graphene/α-MoO3 heterostructure by tuning the graphene doping level, which enables partial focusing at deep subwavelength.

Nature Materials, Published online: 15 August 2022; doi:10.1038/s41563-022-01329-8

Unlike electron spins, nuclear spins in van der Waals materials remain a largely untapped quantum resource. Here we report the fast coherent control of nuclear spins and strong electron-mediated nuclear–nuclear spin coupling in hexagonal boron nitride.

Nature, Published online: 17 August 2022; doi:10.1038/s41586-022-04977-7

Multidimensional time- and angle-resolved photoelectron spectroscopy is used to determine the interlayer exciton formation process, reveal a direct hallmark of the superlattice moiré modification, and reconstruct the real-space wavefunction distribution.

Nature Electronics, Published online: 08 August 2022; doi:10.1038/s41928-022-00800-3

Vanadium diselenide van der Waals contacts made with a controlled crack formation process can be used to fabricate tungsten diselenide transistors with channel lengths of less than 100 nm, on-state current densities of up to 1.7 mA μm–1 and on-state resistances down to 0.50 kΩ μm.

Nature Physics, Published online: 11 August 2022; doi:10.1038/s41567-022-01697-7

The anomalous Hall effect can signify that a material has a spontaneous magnetic order. Now, twisted bilayer graphene shows this effect at half filling, suggesting that the ground state is valley-polarized.

Nature Nanotechnology, Published online: 11 August 2022; doi:10.1038/s41565-022-01186-1

A 2D material based liquid-crystal shows an extremely large optical anisotropy factor in the deep ultraviolet region, showing magnetically tunable birefringence.

Nature Nanotechnology, Published online: 11 August 2022; doi:10.1038/s41565-022-01183-4

Double ionic gated transistors enable excellent control of the band structure of atomically thin semiconductors. Perpendicular electric fields as large as 3 V nm−1 can fully quench the gap of bi- and few-layer WSe2.

Nature, Published online: 08 August 2022; doi:10.1038/d41586-022-02108-w

Electrons in a pure-carbon material display properties that are reminiscent of those in heavy-element compounds. A model inspired by this link hints at how a single-element material can exhibit complex electronic behaviour.

Nature, Published online: 11 August 2022; doi:10.1038/d41586-022-02170-4

Nature highlights three key graphics from the week in science and research.