jinzhitong

Nature Electronics, Published online: 06 June 2022; doi:10.1038/s41928-022-00769-z

Transistors based on two-dimensional semiconductors suffer from electrical instabilities because charges readily get trapped in the gate oxides. As charge trapping is sensitive to the energetic alignment of the channel Fermi level to the defect bands in the oxide, the number of electrically active traps can be reduced by tuning the channel Fermi level.

Nature Physics, Published online: 02 June 2022; doi:10.1038/s41567-022-01616-w

The flat portions of the band structure in bilayer graphene are shown to support interaction-driven symmetry-broken states, similar to moiré heterostructures.

Nature Synthesis, Published online: 30 May 2022; doi:10.1038/s44160-022-00083-8

Using a bottom-up synthetic method, an all sp2-hybridized carbon nanobelt with a Möbius topology is prepared. The macrocyclization step is a Wittig reaction between an aldehyde and phosphorous ylide at opposite edges of a strip that induces a twist.

Author(s): Shuai Zhang, Quanzhou Yao, Lingxiu Chen, Chengxin Jiang, Tianbao Ma, Haomin Wang, Xi-Qiao Feng, and Qunyang Li

Using atomic force microscopy, we have shown that friction on graphene/h−BN superlattice structures may exhibit unusual moiré-scale stick slip in addition to the regular ones observed at the atomic scale. Such dual-scale slip instability will lead to unique length-scale dependent energy dissipation …

[Phys. Rev. Lett. 128, 226101] Published Thu Jun 02, 2022

Nature Electronics, Published online: 27 May 2022; doi:10.1038/s41928-022-00783-1

Methods to create van der Waals contacts between two-dimensional semiconductors and three-dimensional metals are helping to unleash the potential of two-dimensional devices.

Nature Electronics, Published online: 27 May 2022; doi:10.1038/s41928-022-00780-4

Two-dimensional materials stack up

Nature Electronics, Published online: 30 May 2022; doi:10.1038/s41928-022-00767-1

A solid-state electronic switch based on an atomic sheet of molybdenum disulfide is demonstrated in the 6G communication band with very high speed data transmission.

Nature Electronics, Published online: 30 May 2022; doi:10.1038/s41928-022-00766-2

Non-volatile analogue switches made from molybdenum disulfide can operate at frequencies of 480 GHz and achieve data transmission rates of 100 Gbit s–1, making them of potential use in sixth-generation communication technology.

Nature Electronics, Published online: 02 June 2022; doi:10.1038/s41928-022-00768-0

The stability of graphene-based field-effect transistors with amorphous aluminium oxide serving as the top-gate oxide can be improved by tuning the Fermilevel of the two-dimensional channel material such that it maximizes the energy distance between the charge carriers in the channel and the defect bands in the gate oxide.

Nature Photonics, Published online: 26 May 2022; doi:10.1038/s41566-022-01008-9

It is shown that rhombohedral stacked MoS2 can enable scalable photovoltaic effects induced by spontaneous polarization throughout few-micrometre-sized exfoliated flakes. This is exploited in a graphene–MoS2-based photovoltaic device.

Nature Photonics, Published online: 02 June 2022; doi:10.1038/s41566-022-01016-9

Researchers demonstrate a persistent spin helix in an organic–inorganic hybrid ferroelectric halide perovskite whose layered nature makes it intrinsically like a quantum well. They demonstrate a switchable spin-polarized band structure via an intrinsic ferroelectric field.

Nature Nanotechnology, Published online: 31 May 2022; doi:10.1038/s41565-022-01156-7

Author Correction: Monolayer mosaic heterostructures

Nature Materials, Published online: 30 May 2022; doi:10.1038/s41563-022-01260-y

The cycling disordering–ordering transition of low-misfit superlattice nanoprecipitates in metallic materials continuously annihilates radiation defects via a short-range atom-reshuffling process, giving rise to high radiation tolerance.

Nature Materials, Published online: 31 May 2022; doi:10.1038/s41563-022-01253-x

Twisted monolayer–multilayer graphene superlattices present bi-stable reconstruction states, with reversible switch in-between and long-distance propagation triggered by local mechanical perturbation. This provides additional degrees of freedom for moiré engineering.

Nature, Published online: 01 June 2022; doi:10.1038/d41586-022-01476-7

A method has been developed for fabricating thin films of the 2D insulator hexagonal boron nitride with a uniform crystal orientation. The advance makes this material a key contender for replacing silica substrates in future electronics.

Nature, Published online: 01 June 2022; doi:10.1038/s41586-022-04745-7

Using a chemical vapour deposition method, it is possible to epitaxially grow wafer-scale single-crystal trilayers of hexagonal boron nitride—an important dielectric for 2D materials—on Ni (111) foils by boron dissolution.

Proceedings of the National Academy of Sciences, <a href="https://www.pnas.org/toc/pnas/119/22">Volume 119, Issue 22</a>, May 2022.

Nature, Published online: 25 May 2022; doi:10.1038/d41586-022-01450-3

An iconic rotated structure is created from hexagons of carbon atoms.