jinzhitong

Author(s): Gabriel Cáceres-Aravena, Milica Nedić, Paloma Vildoso, Goran Gligorić, Jovana Petrovic, Aleksandra Maluckov, and Rodrigo A. Vicencio

Flat band lattice systems promote the appearance of perfectly compact bulk states, whereas topology favors edge localization. In this work, we report the existence of compact topological edge states on flux-dressed photonic graphene ribbons. We found that robust localization is achieved through a sy…

[Phys. Rev. Lett. 133, 116304] Published Wed Sep 11, 2024

Author(s): Jian Wang, Xu Li, Xingyue Ma, Lan Chen, Jun-Ming Liu, Chun-Gang Duan, Jorge Íñiguez-González, Di Wu, and Yurong Yang

Sliding ferroelectricity is a unique type of polarity recently observed in van der Waals bilayers with a suitable stacking. However, electric-field control of sliding ferroelectricity is hard and could induce large coercive electric fields and serious leakage currents that corrode the ferroelectrici…

[Phys. Rev. Lett. 133, 126801] Published Tue Sep 17, 2024

Author(s): Yueqing Chang, Jinjing Yi, Ang-Kun Wu, Fabian B. Kugler, Eva Y. Andrei, David Vanderbilt, Gabriel Kotliar, and J. H. Pixley

Vacancy-induced impurity states in twisted bilayer graphene provide a tunable system to probe the critical destruction of the Kondo effect.

[Phys. Rev. Lett. 133, 126503] Published Thu Sep 19, 2024

Author(s): Yihua Qiang, Victor L. Quito, Thaís V. Trevisan, and Peter P. Orth

Two-dimensional coherent terahertz spectroscopy (2DCS) emerges as a valuable tool to probe the nature, couplings, and lifetimes of excitations in quantum materials. It thus promises to identify unique signatures of spin liquid states in quantum magnets by directly probing properties of their exotic …

[Phys. Rev. Lett. 133, 126505] Published Fri Sep 20, 2024

Author(s): Yutao Li, Wenjie He, Qi-Chang He, and Wen Wang

Experiments reveal the factors that determine the friction between the single-atom-thick layers in van der Waals materials, which may have uses in lubrication technology.

[Phys. Rev. Lett. 133, 126202] Published Fri Sep 20, 2024

Nature Materials, Published online: 19 September 2024; doi:10.1038/s41563-024-02002-y

Pt oxides are essential catalysts in many critical reactions, but are typically unstable and prone to evaporation above 700 K. A two-dimensional layered Pt oxide with exceptional thermal stability is introduced, capable of surviving at high temperatures.

Nature Communications, Published online: 20 September 2024; doi:10.1038/s41467-024-52657-z

Author Correction: Electrical switching of spin-polarized light-emitting diodes based on a 2D CrI₃/hBN/WSe₂ heterostructure

Author(s): Jiayi Zhu, Huiyuan Zheng, Xi Wang, Heonjoon Park, Chengxin Xiao, Yinong Zhang, Takashi Taniguchi, Kenji Watanabe, Jiaqiang Yan, Daniel R. Gamelin, Wang Yao, and Xiaodong Xu

Moiré superlattices of layered transition metal dichalcogenides are proven to host periodic electron crystals due to strong correlation effects. These electron crystals can also be intertwined with intricate magnetic phenomena. In this Letter, we present our findings on the moiré exchange effect, re…

[Phys. Rev. Lett. 133, 086501] Published Wed Aug 21, 2024

Author(s): J. Qu, E. F. Cuddy, X. Han, J. Liu, H. Li, Y.-J. Zeng, B. Moritz, T. P. Devereaux, P. S. Kirchmann, Z.-X. Shen, and J. A. Sobota

Understanding electron-phonon coupling in noncentrosymmetric materials is critical for controlling the internal fields which give rise to Rashba interactions. We apply time- and angle-resolved photoemission spectroscopy (trARPES) to study coherent phonons in the surface and bulk regions of the polar…

[Phys. Rev. Lett. 133, 106401] Published Tue Sep 03, 2024

Nature Synthesis, Published online: 02 September 2024; doi:10.1038/s44160-024-00642-1

On the characterization of γ-graphyne

Nature Electronics, Published online: 26 August 2024; doi:10.1038/s41928-024-01233-w

Metal gate electrodes with a high cohesive energy—platinum and tungsten—can be used to mitigate leakage currents and premature dielectric breakdown across chemical vapour deposition-grown multilayer hexagonal boron nitride, allowing the material to be used as a gate dielectric in two-dimensional-materials-based transistors.

Nature Electronics, Published online: 28 August 2024; doi:10.1038/s41928-024-01241-w

The further development of transistors based on two-dimensional transition metal dichalcogenides faces various issues, starting with the high density of defects typically found in the materials.

Nature Electronics, Published online: 18 September 2024; doi:10.1038/s41928-024-01245-6

A high-κ dielectric ceramic, magnesium niobate, can be epitaxially grown on a mica substrate and then transferred to form the gate dielectric in molybdenum disulfide transistors, providing van der Waals interfaces and high robustness to temperature and voltage.

Nature Electronics, Published online: 18 September 2024; doi:10.1038/s41928-024-01254-5

Two-dimensional transistors heat up

Nature Physics, Published online: 26 August 2024; doi:10.1038/s41567-024-02618-6

Magnetic phases that are stabilized by quantum fluctuations in low dimensions are rare. A thickness-dependent crossover from three-dimensional antiferromagnetism to a two-dimensional vestigial nematic state that is driven by fluctuations has now been observed.

Nature Materials, Published online: 27 August 2024; doi:10.1038/s41563-024-01985-y

The authors experimentally demonstrate twist-angle modulation of the spin texture in graphene-based heterostructures.

Nature Materials, Published online: 27 August 2024; doi:10.1038/s41563-024-01987-w

A metastable pentagonal PdTe2 monolayer has been synthesized through symmetry-driven epitaxy, utilizing lattice matching with a Pd(100) substrate. The lattices, phonons and electronic structures of this phase have been studied.

Nature Materials, Published online: 28 August 2024; doi:10.1038/s41563-024-01986-x

New two-dimensional semiconductors may exhibit properties beyond inherent semiconducting attributes. Here the authors report protonated semiconducting III–V-derived van der Waals crystals with memristive properties.

Nature Materials, Published online: 30 August 2024; doi:10.1038/s41563-024-01999-6

Inspired by non-trivial band topology and the variety of correlated electronic phases in moiré superlattices formed in van der Waals materials, scientists are finding alternative material platforms to exploit the rich phenomena arising from the twist-angle degree of freedom.

Nature Materials, Published online: 30 August 2024; doi:10.1038/s41563-024-01982-1

The realization of twisted ligand-free two-dimensional halide perovskite-based moiré superlattices enables twistronic control of exciton dynamics in these systems and brings stimulating implications towards the development of halide perovskite photonic devices.

Nature Materials, Published online: 03 September 2024; doi:10.1038/s41563-024-01989-8

The practical application of 2D transition metal dichalcogenides (TMDs) requires robust and scalable synthesis of these atomically thin materials and their heterostructures. This Review discusses the key challenges, current progress and opportunities in the controllable synthesis of TMD-based heterostructures, superlattices and moiré superlattices.

Nature Materials, Published online: 10 September 2024; doi:10.1038/s41563-024-01993-y

Second-order superlattices emerging in magic-angle twisted bilayer graphene aligned with hexagonal boron nitride are visualized in real space through cryogenic nano-imaging, revealing the impact of strain and twist-angle variations.

Nature Materials, Published online: 16 September 2024; doi:10.1038/s41563-024-02003-x

Second-order superlattices emerge from the interference between moiré superlattices of comparable periodicities. Direct real-space visualization reveals their rich structural diversity and extreme sensitivity to external parameters such as strain and twist angle.

Nature Nanotechnology, Published online: 20 August 2024; doi:10.1038/s41565-024-01751-w

Electrostatically tunable graphene-based electronic interferometers show non-trivial exchange statistics of quasiparticles, revealing their wave-like properties.

Nature Chemistry, Published online: 21 August 2024; doi:10.1038/s41557-024-01595-w

Chirality in extended 2D structures exhibits fundamental differences from molecular-level chirality. This Perspective discusses how local molecular chirality is transmitted and amplified to form distinctive global chirality within ultrathin, single-crystalline 2D materials; it also explores the future challenges and potential of this field.

Nature, Published online: 28 August 2024; doi:10.1038/s41586-024-07880-5

A combination of exciton sensing and optical pump–probe spectroscopy is used to investigate the dynamics of isospin orders in MATBG with WSe2 substrate across the entire flat band, achieving sub-picosecond resolution.

Nature, Published online: 02 September 2024; doi:10.1038/s41586-024-07940-w

Publisher Correction: Elastic films of single-crystal two-dimensional covalent organic frameworks

Nature, Published online: 06 September 2024; doi:10.1038/s41586-024-08001-y

Publisher Correction: Single-crystalline metal-oxide dielectrics for top-gate 2D transistors

Nature, Published online: 11 September 2024; doi:10.1038/s41586-024-07925-9

A molecular aggregate formed in a two-dimensional organic–inorganic hybrid perovskite superlattice with a near-equilibrium distance is shown to have a near-unity photoluminescence quantum yield like that of single molecules, despite being in an aggregated state.

Nature Chemistry, Published online: 12 August 2024; doi:10.1038/s41557-024-01599-6

Solar water splitting holds great promise for hydrogen production but is significantly hindered by rapid recombination of photogenerated charges. Now a metal–organic framework photocatalyst has been shown to undergo, upon photoexcitation, a dynamic excited-state structural twist that greatly suppresses charge recombination to enable efficient photocatalytic overall water splitting.