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Elastic properties of moir\'e lattices in epitaxial two-dimensional materials
- Source :
- Physical Review B, 106, L201402 (2022)
- Publication Year :
- 2022
-
Abstract
- Unlike conventional two-dimensional (2D) semiconductor superlattices, moir\'{e} patterns in 2D materials are flexible and their electronic, magnetic, optical, and mechanical properties depend on their topography. Within a continuous+atomistic theory treating 2D materials as crystalline elastic membranes, we abandon the flat-membrane scenario usually assumed for these materials and address out-of-plane deformations. We confront our predictions to experimental analyses on model systems, epitaxial graphene, and MoS$_2$ on metals and reveal that compression/expansion and bending energies stored in the membrane can compete with adhesion energy, leading to a subtle moir\'{e} wavelength selection and the formation of wrinkles.<br />Comment: 7 pages, 3 figures
- Subjects :
- Condensed Matter - Mesoscale and Nanoscale Physics
Subjects
Details
- Database :
- arXiv
- Journal :
- Physical Review B, 106, L201402 (2022)
- Publication Type :
- Report
- Accession number :
- edsarx.2211.02482
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevB.106.L201402