Symmetry Breaking and Topological Phases in Strongly Correlated Twisted van der Waals Heterostructures
NISE Seminar
- Date: Mar 25, 2025
- Time: 02:45 PM - 03:30 PM (Local Time Germany)
- Speaker: Sandeepta Paudel
- Location: Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, 06120 Halle (Saale)
- Room: Lecture Hall, B.1.11
Twisted van der Waals (vdW) heterostructures have emerged as a versatile platform for exploring novel quantum phenomena. Moiré lattices are formed by introducing a small twist angle between adjacent layers of vdW materials, leading to exotic electronic phases, including topological states, superconductivity, and correlated insulators. These phenomena are closely related to strong electron-electron interactions, the topology of the electronic bands, and symmetry breaking.
The increased periodicity of the moiré lattice enables precise tuning of entire bands by electrostatic gating, allowing for control over the electric field and charge carrier density in the system. The capability to control these properties within a single sample makes twisted vdW heterostructures an ideal platform for investigating complex quantum systems and engineering strongly correlated topological quantum states.
In this presentation, I will discuss the intricate phase diagram of these systems and highlight my work on the fabrication of twisted graphene heterostructures.
The increased periodicity of the moiré lattice enables precise tuning of entire bands by electrostatic gating, allowing for control over the electric field and charge carrier density in the system. The capability to control these properties within a single sample makes twisted vdW heterostructures an ideal platform for investigating complex quantum systems and engineering strongly correlated topological quantum states.
In this presentation, I will discuss the intricate phase diagram of these systems and highlight my work on the fabrication of twisted graphene heterostructures.