Twisted 2D Electronic and Photonic Materials and Devices
Van der Waals (vdW) materials represent a versatile material platform to explore fundamental science of correlated phases (e.g. Mott insulator, superconductivity, and magnetism) and new electronic and photonic devices. When two atomically thin layers are stacked vertically, band alignment, hybrid states, and proximity effects drastically expand the parameter space from which new properties emerge.
A periodic variation of atomic alignment between the two layers lead to the formation of a moiré pattern. In recent years, the twist angle between adjacent layers has emerged as a new handle to tune and control the periodicity of the in-plane potential modulation or the shift between the valleys in the momentum space. Many exciting scientific and technological opportunities emerge in such van der Waals heterostructures with controlled twist angles.
Topics covered include, but are not limited to:
- Moiré patterns formed in homo- and hetero-bilayers of 2D materials by controlled assembly or growth
- Novel techniques to probe wavelength, strain, and electronic bands in moiré patterns
- Theoretical studies of the electron and phonon band structure and topology in moiré patterns
- Optical properties of moiré patterns in vdW heterostructures, and those integrated with existing platforms such as cavities, plasmonic nanostructures, and metasurfaces
- Electrical, optical, and magnetic devices that take advantage of twist-controlled vdW heterostructures
Emanuel Tutuc, University of Texas
Xiaoqin (Elaine) Li, University of Texas