A5093241723- Topological Materials and Phenomena
- Graphene research and applications
- Carbon Nanotubes in Composites
- Plasmonic and Surface Plasmon Research
- Quantum and electron transport phenomena
- Surface and Thin Film Phenomena
- Terahertz technology and applications
National University of Singapore
2023-2024
Twist-controlled moire superlattices (MS) have emerged as a versatile platform in which to realize artificial systems with complex electronic spectra. Bernal-stacked bilayer graphene (BLG) and hexagonal boron nitride (hBN) form an interesting example of the MS that has recently featured set unexpected behaviors, such unconventional ferroelectricity ratchet effect. Yet, understanding BLG/hBN properties has, at present, remained fairly limited. Here we develop multi-messenger approach combines...
Light incident upon materials can induce changes in their electrical conductivity, a phenomenon referred to as photoresistance. In semiconductors, the photoresistance is negative, light-induced promotion of electrons across band gap enhances number charge carriers participating transport. superconductors, positive because destruction superconducting state, whereas normal metals it vanishing. Here we report qualitative deviation from standard behavior metallic graphene. We show that Dirac...