jinzhitong

Nature Materials, Published online: 07 March 2024; doi:10.1038/s41563-024-01815-1

Cu2Se is of interest for thermoelectrics as it is environmentally sustainable and has a high figure of merit ZT; however, copper ion migration impacts device stability. Here a co-doping strategy that combines steric and electrostatic effects is shown to improve device stability as well as improving ZT to 3.

Author(s): Nicolás Morales-Durán, Nemin Wei, Jingtian Shi, and Allan H. MacDonald

We explain the appearance of magic angles and fractional Chern insulators in twisted K-valley homobilayer transition metal dichalcogenides by mapping their continuum model to a Landau level problem. Our approach relies on an adiabatic approximation for the quantum mechanics of valence band holes in …

[Phys. Rev. Lett. 132, 096602] Published Fri Mar 01, 2024

Author(s): Lujunyu Wang, Jiaojiao Zhu, Haiyun Chen, Hui Wang, Jinjin Liu, Yue-Xin Huang, Bingyan Jiang, Jiaji Zhao, Hengjie Shi, Guang Tian, Haoyu Wang, Yugui Yao, Dapeng Yu, Zhiwei Wang, Cong Xiao, Shengyuan A. Yang, and Xiaosong Wu

Researchers have observed a new class of nonlinear Hall effect that can be understood through a geometric description of the electronic wave function.

[Phys. Rev. Lett. 132, 106601] Published Wed Mar 06, 2024

Author(s): Yadong Jiang, Huan Wang, Kejie Bao, Zhaochen Liu, and Jing Wang

We theoretically propose that the van der Waals layered ternary transition metal chalcogenide V2MX4 (M=W, Mo; X=S, Se) is a new family of quantum anomalous Hall insulators with sizable bulk gap and Chern number C=−1. The large topological gap originates from the deep band inversion between spin-up b…

[Phys. Rev. Lett. 132, 106602] Published Thu Mar 07, 2024

Nature Electronics, Published online: 09 February 2024; doi:10.1038/s41928-024-01117-z

Tapes whose adhesive force is controlled by ultraviolet illumination can be used to cleanly transfer large-area graphene, molybdenum disulfide and other two-dimensional materials with a low thermal budget and using no organic solvents.

Nature Electronics, Published online: 01 March 2024; doi:10.1038/s41928-024-01129-9

A two-dimensional perovskite, Sr2Nb3O10, can be integrated with a range of other two-dimensional materials and act as a photoactive high-κ dielectric in the resulting phototransistors.

Nature Synthesis, Published online: 22 February 2024; doi:10.1038/s44160-024-00485-w

The enantioselective synthesis of an inherently chiral molecular nanographene is demonstrated by precisely controlling the sequential generation of chiral elements in its structure. The final stereocontrolled graphitization step allows for the separate synthesis of both enantiomers, thus paving the way towards chirality controlled all-carbon nanographenes.

Nature Synthesis, Published online: 29 February 2024; doi:10.1038/s44160-024-00488-7

A chemist-intuited atomic robotic probe is developed that enables autonomous site-selective manipulation of magnetic nanographenes with atomic precision and aids in reaction mechanism elucidation through the incorporation of learned knowledge and artificial intelligence, leading to the intelligent synthesis of these materials.

Nature Synthesis, Published online: 07 March 2024; doi:10.1038/s44160-024-00501-z

Control of atoms with single-atom precision is a key challenge in nanoscience. Now an electron beam approach to engineer shielded metal atoms in transition metal dichalcogenides is proposed. This method can create diverse atomic vacancies, leading to interesting magnetic and electronic properties.

Nature Energy, Published online: 28 February 2024; doi:10.1038/s41560-024-01470-5

deQuilettes et al. show that hexylammonium bromide forms an iodide-rich 2D structure and bromide gradient at the surface of 3D perovskite, both of which limit interfacial charge and energy losses in perovskite solar cells.

Nature Photonics, Published online: 06 March 2024; doi:10.1038/s41566-024-01397-z

A photonic equivalent to disclination in crystals has been used to produce orbital angular momentum laser light directly on-chip, ushering in compact and efficient twisted-light lasers.

Nature Nanotechnology, Published online: 01 March 2024; doi:10.1038/s41565-024-01628-y

Tellurite molybdenum quaternary oxides, a family of van der Waals materials, show slow group velocity and long lifetimes with promising implications for tunable low-loss anisotropic polaritonics.

Nature Communications, Published online: 08 March 2024; doi:10.1038/s41467-024-46293-w

Area selective atomic layer deposition (AS-ALD) has been recently proposed as a controlled growth method, but the patterning resolution and selectivity require improvements. Here, the authors report a superlattice-based AS-ALD method to deposit various materials onto 2D MoS2-MoSe2 lateral superlattices, with a minimum half-pitch size of ~ 10 nm.

Nature Chemistry, Published online: 08 March 2024; doi:10.1038/s41557-024-01477-1

The insertion of metal atoms and heteroaromatic units provides a way to tune the optical, electronic and magnetic properties of graphene nanoribbons. Now the synthesis of a porphyrin-fused graphene nanoribbon with a narrow bandgap and high charge mobility has been achieved, and this material used to fabricate field-effect and single-electron transistors.

Nature, Published online: 29 June 2023; doi:10.1038/s41586-023-06363-3

Quantum metric-induced nonlinear transport in a topological antiferromagnet

Nature Electronics, Published online: 17 July 2023; doi:10.1038/s41928-023-00984-2

This Review examines switching mechanisms in memristive devices based on van der Waals materials, and explores the advantages such devices offer and the challenges that must be faced for them to be of use in next-generation electronic and computing applications.

Nature Energy, Published online: 06 July 2023; doi:10.1038/s41560-023-01295-8

To prevent charge losses and degradation at the buried interface of inverted methylammonium-free perovskite solar cells, Li et al. form a 2D/3D perovskite structure using 2-aminoindan hydrochloride as an additive.

Nature Physics, Published online: 10 July 2023; doi:10.1038/s41567-023-02104-5

One-dimensional chains of magnetic adatoms on the surface of a superconductor have been claimed to host topological states. Now, this idea is extended to two-dimensional systems.

Nature Nanotechnology, Published online: 19 July 2023; doi:10.1038/s41565-023-01472-6

‘Rotating’ contact for bias-free photodetection with 2D materials

Nature Nanotechnology, Published online: 20 July 2023; doi:10.1038/s41565-023-01445-9

Interaction of two-dimensional transition metal dichalcogenide grains with exposed oxygen–aluminium atomic plane in sapphire is a more dominant factor than step-edge docking in controlling the single-crystal epitaxy of these materials.

Nature Materials, Published online: 06 July 2023; doi:10.1038/s41563-023-01600-6

The authors report the emergence of a transient hexatic state during laser-induced transformation between two charge-density wave (CDW) phases in a thin film of the CDW material 1T-TaS2.

Nature Materials, Published online: 13 July 2023; doi:10.1038/s41563-023-01590-5

The direct and facile growth of WS2 and WSe2 nanotubes with controllable chirality is realized using catalytic chemical vapour deposition with Au nanoparticles.

Nature, Published online: 19 July 2023; doi:10.1038/s41586-023-06294-z

A moiré quasicrystal constructed by twisting three layers of graphene with two different twist angles shows high tunability between a periodic-like regime at low energies and a strongly quasiperiodic regime at higher energies alongside strong interactions and superconductivity.

Nature, Published online: 19 July 2023; doi:10.1038/s41586-023-06264-5

The electronic states in three-dimensional crystals such as graphite can be tuned by a superlattice potential occurring at the interface with crystallographically aligned hexagonal boron nitride.

Nature, Published online: 19 July 2023; doi:10.1038/s41586-023-06290-3

Transport measurements of dual-gated devices constructed by slightly rotating a monolayer graphene sheet atop a thin bulk graphite crystal are performed, showing that moiré potential transforms the electronic properties of an entire graphitic thin film.

Nature, Published online: 19 July 2023; doi:10.1038/s41586-023-06107-3

Dilemma in optical identification of single-layer multiferroics

Nature Nanotechnology, Published online: 15 June 2023; doi:10.1038/s41565-023-01433-z

Graphene, transition-metal dichalcogenides, MXenes and the other members of the flatland family are becoming a rich playground for chemists, enlarging the range of applications these nanomaterials can be used for.