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Gas permeation through graphdiyne-based nanoporous membranes
Zhihua Zhou, Yongtao Tan, Qian Yang +20
Nanoporous membranes based on two dimensional materials are predicted to provide highly selective gas transport in combination with extreme permeability. Here we investigate membra…
Interfacial ferroelectricity in marginally twisted 2D semiconductors
Astrid Weston, Eli G Castanon, Vladimir Enaldiev +19
Twisted heterostructures of two-dimensional crystals offer almost unlimited scope for the design of novel metamaterials. Here we demonstrate a room-temperature ferroelectric semico…
Holographic reconstruction of the interlayer distance of bilayer two-dimensional crystal samples from their convergent beam electron diffraction patterns
Tatiana Latychevskaia, Yichao Zou, Colin Robert Woods +5
The convergent beam electron diffraction (CBED) patterns of twisted bilayer samples exhibit interference patterns in their CBED spots. Such interference patterns can be treated as…
Convergent beam electron diffraction of multilayer van der Waals structures
Tatiana Latychevskaia, Colin Robert Woods, Yi Bo Wang +4
Convergent beam electron diffraction is routinely applied for studying deformation and local strain in thick crystals by matching the crystal structure to the observed intensity di…
Atomic reconstruction in twisted bilayers of transition metal dichalcogenides
Astrid Weston, Yichao Zou, Vladimir Enaldiev +17
Van der Waals heterostructures form a massive interdisciplinary research field, fueled by the rich material science opportunities presented by layer assembly of artificial solids w…
Stacking Order in Graphite Films Controlled by Van der Waals Technology
Yaping Yang, Yi-Chao Zou, Colin R. Woods +10
In graphite crystals, layers of graphene reside in three equivalent, but distinct, stacking positions typically referred to as A, B, and C projections. The order in which the layer…
Ultra-thin van der Waals crystals as semiconductor quantum wells
Johanna Zultak, Samuel Magorrian, Maciej Koperski +11
Control over the electronic spectrum at low energy is at the heart of the functioning of modern advanced electronics: high electron mobility transistors, semiconductor and Capasso…
Atomically-thin micas as proton conducting membranes
L. Mogg, G. -P. Hao, S. Zhang +6
Monolayers of graphene and hexagonal boron nitride (hBN) are highly permeable to thermal protons. For thicker two-dimensional (2D) materials, proton conductivity diminishes exponen…
Micromagnetometry of two-dimensional ferromagnets
M. Kim, P. Kumaravadivel, J. Birkbeck +14
The study of atomically thin ferromagnetic crystals has led to the discovery of unusual magnetic behaviour and provided insight into the magnetic properties of bulk materials. Howe…
Infrared-to-violet tunable optical activity in atomic films of GaSe, InSe, and their heterostructures
Daniel J. Terry, Viktor Zólyomi, Matthew Hamer +11
Two-dimensional semiconductors - atomic layers of materials with covalent intra-layer bonding and weak (van der Waals or quadrupole) coupling between the layers - are a new class o…
Magnetoresistance in Co-hBN-NiFe tunnel junctions enhanced by resonant tunneling through single defects in ultrathin hBN barriers
Pablo U. Asshoff, Jose L. Sambricio, Sergey Slizovskiy +7
Hexagonal boron nitride (hBN) is a prototypical high-quality two-dimensional insulator and an ideal material to study tunneling phenomena, as it can be easily integrated in vertica…
Anomalous twin boundaries in 2D materials
A. P. Rooney, Z. Li, W. Zhao +7
The high mechanical strength and excellent flexibility of 2D materials such as graphene are some of their most important properties [1]. Good flexibility is key for exploiting 2D m…
Convergent beam electron holography for analysis of van der Waals heterostructures
Tatiana Latychevskaia, Colin Robert Woods, Yi Bo Wang +4
Van der Waals heterostructures, which explore the synergetic properties of two-dimensional (2D) materials when assembled into three-dimensional stacks, have already brought to life…
Transport of hydrogen isotopes through interlayer spacing in van der Waals crystals
S. Hu, K. Gopinadhan, A. Rakowski +7
Atoms start behaving as waves rather than classical particles if confined in spaces commensurate with their de Broglie wavelength. At room temperature this length is only about one…
Observing imperfection in atomic interfaces for van der Waals heterostructures
Aidan. P. Rooney, Aleksey Kozikov, Alexander N. Rudenko +8
Vertically stacked van der Waals heterostructures are a lucrative platform for exploring the rich electronic and optoelectronic phenomena in two-dimensional materials. Their perfor…
Phase segregation facilitates exfoliation of franckeite crystals to a single unit cell thickness
Matěj Velický, Peter S. Toth, Alexander M. Rakowski +8
Weak interlayer van der Waals interactions in bulk crystals facilitate their mechanical exfoliation to monolayer and few-layer two-dimensional (2D) materials, which exhibit strikin…
Magnetoresistance of vertical Co-graphene-NiFe junctions controlled by charge transfer and proximity-induced spin splitting in graphene
P. U. Asshoff, J. L. Sambricio, A. P. Rooney +9
Graphene is hailed as an ideal material for spintronics due to weak intrinsic spin-orbit interaction that facilitates lateral spin transport and tunability of its electronic proper…
Quality heterostructures from two dimensional crystals unstable in air by their assembly in inert atmosphere
Y. Cao, A. Mishchenko, G. L. Yu +16
Many layered materials can be cleaved down to individual atomic planes, similar to graphene, but only a small minority of them are stable under ambient conditions. The rest reacts…
Light-emitting diodes by bandstructure engineering in van der Waals heterostructures
F. Withers, O. Del Pozo-Zamudio, A. Mishchenko +8
The advent of graphene and related 2D materials has recently led to a new technology: heterostructures based on these atomically thin crystals. The paradigm proved itself extremely…
Electronic Properties of Graphene Encapsulated with Different Two-Dimensional Atomic Crystals
A. V. Kretinin, Y. Cao, J. S. Tu +18
Hexagonal boron nitride is the only substrate that has so far allowed graphene devices exhibiting micron-scale ballistic transport. Can other atomically flat crystals be used as su…
Vertical Field Effect Transistor based on Graphene-WS2 Heterostructures for flexible and transparent electronics
Thanasis Georgiou, Rashid Jalil, Branson D. Belle +12
The celebrated electronic properties of graphene have opened way for materials just one-atom-thick to be used in the post-silicon electronic era. An important milestone was the cre…
Cross-sectional imaging of individual layers and buried interfaces of graphene-based heterostructures and superlattices
S. J. Haigh, A. Gholinia, R. Jalil +7
By stacking various two-dimensional (2D) atomic crystals [1] on top of each other, it is possible to create multilayer heterostructures and devices with designed electronic propert…