jinzhitong

Author(s): Maxim Bykov, Timofey Fedotenko, Stella Chariton, Dominique Laniel, Konstantin Glazyrin, Michael Hanfland, Jesse S. Smith, Vitali B. Prakapenka, Mohammad F. Mahmood, Alexander F. Goncharov, Alena V. Ponomareva, Ferenc Tasnádi, Alexei I. Abrikosov, Talha Bin Masood, Ingrid Hotz, Alexander N. Rudenko, Mikhail I. Katsnelson, Natalia Dubrovinskaia, Leonid Dubrovinsky, and Igor A. Abrikosov

The layered compound BeN4, berillontirene, is a Dirac semimetal with linear dispersion in the vicinity of the Fermi energy and two Dirac points coinciding with the Fermi energy, similar to graphene.

[Phys. Rev. Lett. 126, 175501] Published Mon Apr 26, 2021

Nature Photonics, Published online: 29 April 2021; doi:10.1038/s41566-021-00801-2

A simple coating of a sub-200-nm-thick quantum dot film on two-dimensional materials can drastically enhance their nonlinear optical responses through nonlinear-excitation resonance energy transfer by a high-efficiency remote dipole–dipole coupling.

Nature Electronics, Published online: 26 April 2021; doi:10.1038/s41928-021-00566-0

Molybdenum disulfide vertical transistors with channel lengths down to one atomic layer can be made with metal electrodes using a mechanical van der Waals transfer process that leads to a high-quality metal–semiconductor interface.

Nature Physics, Published online: 15 April 2021; doi:10.1038/s41567-021-01219-x

A two-fold rotational symmetry is observed in the superconducting state of NbSe2. This is strikingly different from the three-fold symmetry of the lattice, and suggests that a mixed conventional and unconventional order parameter exists in this material.

Nature Nanotechnology, Published online: 03 May 2021; doi:10.1038/s41565-021-00894-4

Magic-angle twisted bilayer graphene exhibits a wide range of phases, such as metal, insulator and superconductor states. Now local electrostatic gating devices made from this two-dimensional material platform enable highly tunable Josephson junctions, edge tunnelling spectroscopy and single-electron transistor operation.

Nature Nanotechnology, Published online: 03 May 2021; doi:10.1038/s41565-021-00896-2

In situ electrostatic control of two-dimensional superconductivity is commonly limited due to large charge carrier densities. Now, by means of local gates, electrostatic gating can define a Josephson junction in a magic-angle twisted bilayer graphene device, a single-crystal material.

Nature Nanotechnology, Published online: 03 May 2021; doi:10.1038/s41565-021-00913-4

Twisted bilayer graphene enables the realization of Josephson junctions and single electron transistors in a single, crystalline material using electric field gating only, thereby avoiding interfaces between dissimilar materials.

Nature Materials, Published online: 28 April 2021; doi:10.1038/s41563-021-00999-0

The next stage of the Graphene Flagship is marked by a €20 million investment for an experimental Pilot Line, promoting the transition of devices based on two-dimensional materials from research to industry.

Nature, Published online: 05 May 2021; doi:10.1038/s41586-021-03449-8

Two-dimensional electronic systems in few-layer black arsenic show gate-tunable Rashba bands with unique spin–valley flavours and unconventional quantum Hall states due to synergetic spin–orbit coupling and the Stark effect.

Nature Nanotechnology, Published online: 19 April 2021; doi:10.1038/s41565-021-00885-5

Antiferromagnets are interesting materials for fast spintronics applications, but control of the antiferromagnetic order has been limited to bulk materials so far. Now, uniaxial strain is shown to align the Néel vector in MnPSe3 down to the monolayer limit.

Nature Materials, Published online: 26 April 2021; doi:10.1038/s41563-021-00968-7

The polarization of photoluminescence is found to depend on spin orientation in a van der Waals antiferromagnet.

Nature, Published online: 21 April 2021; doi:10.1038/s41586-021-03429-y

The orientation of a rotating para-xylene molecule in the nanochannel of a zeolite framework can be visualised by electron microscopy to determine the host–guest van der Waals interaction inside the channel.

Nature Materials, Published online: 15 April 2021; doi:10.1038/s41563-021-00971-y

A general method for the synthesis of high-purity crystals of metastable 1T′-phase transition metal dichalcogenides is reported, providing a source of phase-engineered materials that can be used to systematically explore their intrinsic properties.

Nature Materials, Published online: 15 April 2021; doi:10.1038/s41563-021-00973-w

Complete strain tensor fields of twisted bilayer graphene are quantitatively mapped, revealing two-regime reconstruction mechanics depending on twist angle.

Nature Chemistry, Published online: 15 April 2021; doi:10.1038/s41557-021-00666-6

The development of metal–organic magnets that combine tunable magnetic properties with other desirable physical properties remains challenging despite numerous potential applications. Now, a mixed-valent chromium–triazolate material has been prepared that exhibits itinerant ferromagnetism with a magnetic ordering temperature of 225 K, a high conductivity and large negative magnetoresistance (23%).