Directed exfoliating and ordered stacking of transition-metal-dichalcogenides.

@article{Li2022DirectedEA,
  title={Directed exfoliating and ordered stacking of transition-metal-dichalcogenides.},
  author={Yanshuang Li and Xiu-Hua Xie and Binghui Li and Xiaoli Sun and Yichen Yang and Jishan Liu and Ji-Yong Feng and Yingze Zhou and Yuanzheng Li and Wei-Zhe Liu and Shuangpeng Wang and Weiqi Wang and Huan Zeng and Zhenzhong Zhang and Dawei Shen and Dezhen Shen},
  journal={Nanoscale},
  year={2022}
}
Two-dimensional van der Waals crystals provide a limitless scope for designing novel combinations of physical properties by controlling the stacking order or twist angle of individual layers. Lattice orientation between stacked monolayers is significant not only for breaking the engineering symmetry but also for the study of many-body quantum phases and band topology. Thus far the state-of-the-art exfoliation approaches focus on the achievements of quality, size, yield, and scalability, while… 

Figures from this paper

References

SHOWING 1-10 OF 52 REFERENCES
Interfacial ferroelectricity in rhombohedral-stacked bilayer transition metal dichalcogenides
TLDR
By stacking two identical monolayer TMDs in parallel, this work obtains electrically switchable rhombohedral-stacking configurations, with out-of-plane polarization that is flipped by in-plane sliding motion, and quantifies the ferroelectric built-in interlayer potential, in good agreement with first-principles calculations.
Deep moiré potentials in twisted transition metal dichalcogenide bilayers
In twisted bilayers of semiconducting transition metal dichalcogenides (TMDs), a combination of structural rippling and electronic coupling gives rise to periodic moire potentials that can confine
Correlated insulator behaviour at half-filling in magic-angle graphene superlattices
TLDR
It is shown experimentally that when this angle is close to the ‘magic’ angle the electronic band structure near zero Fermi energy becomes flat, owing to strong interlayer coupling, and these flat bands exhibit insulating states at half-filling, which are not expected in the absence of correlations between electrons.
Interfacial ferroelectricity in marginally twisted 2D semiconductors
Twisted heterostructures of two-dimensional crystals offer almost unlimited scope for the design of novel metamaterials. Here we demonstrate a room-temperature ferroelectric semiconductor that is
Disassembling 2D van der Waals crystals into macroscopic monolayers and reassembling into artificial lattices
TLDR
A facile method to disassemble vdW single crystals layer by layer into monolayers with near-unity yield and with dimensions limited only by bulk crystal sizes is reported, one step closer to mass production of macroscopic monolayer and bulk-like artificial materials with controllable properties.
Bilayer Wigner crystals in a transition metal dichalcogenide heterostructure.
TLDR
The observation of bilayer Wigner crystals without magnetic fields or moiré potentials in an atomically thin transition metal dichalcogenide heterostructure, which consists of two MoSe2 monolayers separated by hexagonal boron nitride, demonstrates that anatomically thin heterost structure is a highly tunable platform for realizing many-body electronic states and probing their liquid-solid and magnetic quantum phase transitions.
Graphite edge controlled registration of monolayer MoS2 crystal orientation
Transition metal dichalcogenides such as the semiconductor MoS2 are a class of two-dimensional crystals. The surface morphology and quality of MoS2 grown by chemical vapor deposition are examined
Second harmonic generation from artificially stacked transition metal dichalcogenide twisted bilayers.
TLDR
It is shown here that the SHG is an efficient, sensitive, and nondestructive characterization for the stacking orientation, crystal polarity, and domain boundary of van der Waals heterostructures made of noncentrosymmetric layered materials.
Interlayer couplings, Moiré patterns, and 2D electronic superlattices in MoS2/WSe2 hetero-bilayers
TLDR
A periodic modulation of the local bandgap in the rotationally aligned MoS2/WSe2 bilayer creates a 2D electronic superlattice and quantitatively determine the influence of interlayer coupling on the electronic structure of the hetero-bilayer at different critical points.
Topological Insulators in Twisted Transition Metal Dichalcogenide Homobilayers.
TLDR
It is shown that Δ(r) has a topologically nontrivial skyrmion lattice texture in real space, and that the topmost moiré valence bands provide a realization of the Kane-Mele quantum spin-Hall model, i.e., the two-dimensional time-reversal-invariant topological insulator.
...
1
2
3
4
5
...