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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

  • Czech description

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