Moiré patterns in van der Waals heterostructures
| Autor: | Simon Brown, Maxime Le Ster, Pawel J. Kowalczyk, Tobias Maerkl |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Condensed matter physics Stacking chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Lambda 01 natural sciences Symmetry (physics) law.invention Bismuth Antimony chemistry law 0103 physical sciences Monolayer Pyrolytic carbon Scanning tunneling microscope 010306 general physics 0210 nano-technology |
| Zdroj: | Physical Review B. 99 |
| ISSN: | 2469-9969 2469-9950 |
| Popis: | Using scanning tunneling microscopy, we report the observation of moir\'e patterns (MPs) on van der Waals heterostructures comprised of various 2D allotropes of bismuth and antimony grown on highly ordered pyrolytic graphite and ${\mathrm{MoS}}_{2}$. The spatial periods of the MPs range from $\ensuremath{\lambda}\ensuremath{\sim}1$ to $\ensuremath{\sim}10$ nm. For all the reported cases ($\ensuremath{\alpha}$-bismuthene, $\ensuremath{\alpha}$-antimonene, $\ensuremath{\beta}$-antimonene, and monolayer bismuthene), we model the observations using a simple superposition model (SSM). Where possible, the results obtained from the SSM are compared to analytical prediction. MPs emerging from mixed symmetry stacking (hexagonal on rectangular) are explained without requiring commensuration of the layers. |
| Databáze: | OpenAIRE |
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