Complex Strain Scapes in Reconstructed Transition-Metal Dichalcogenide Moiré Superlattices
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F23%3A00571052" target="_blank" >RIV/61388955:_____/23:00571052 - isvavai.cz</a>
Alternative codes found
RIV/61388998:_____/23:00571077
Result on the web
<a href="https://hdl.handle.net/11104/0342363" target="_blank" >https://hdl.handle.net/11104/0342363</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acsnano.3c00609" target="_blank" >10.1021/acsnano.3c00609</a>
Alternative languages
Result language
angličtina
Original language name
Complex Strain Scapes in Reconstructed Transition-Metal Dichalcogenide Moiré Superlattices
Original language description
We investigate the intrinsic strain associated with the coupling of twisted MoS2/MoSe2 heterobilayers by combining experiments and molecular dynamics simulations. Our study reveals that small twist angles (between 0 and 2°) give rise to considerable atomic reconstructions, large moiré periodicities, and high levels of local strain (with an average value of ∼1%). Moreover, the formation of moiré superlattices is assisted by specific reconstructions of stacking domains. This process leads to a complex strain distribution characterized by a combined deformation state of uniaxial, biaxial, and shear components. Lattice reconstruction is hindered with larger twist angles (>10°) that produce moiré patterns of small periodicity and negligible strains. Polarization-dependent Raman experiments also evidence the presence of an intricate strain distribution in heterobilayers with near-0° twist angles through the splitting of the E2g1 mode of the top (MoS2) layer due to atomic reconstruction. Detailed analyses of moiré patterns measured by AFM unveil varying degrees of anisotropy in the moiré superlattices due to the heterostrain induced during the stacking of monolayers.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ACS Nano
ISSN
1936-0851
e-ISSN
1936-086X
Volume of the periodical
17
Issue of the periodical within the volume
8
Country of publishing house
US - UNITED STATES
Number of pages
10
Pages from-to
7787-7796
UT code for WoS article
000968362700001
EID of the result in the Scopus database
2-s2.0-85152204163