Research

Two-dimensional Materials

We investigate two-dimensional quantum materials, including superconductors, semimetals, semiconductors, and insulators. Using dual-gated geometries, we precisely tune carrier density and electric field, allowing controlled exploration of correlated, topological, and magnetic phases in these materials.

Moiré superlattice

Moiré superlattices are formed by stacking 2D crystals with small twist angles or lattice mismatches. The long-period moiré potential suppresses the kinetic energy of electrons and enhances interaction effects. We use these systems to study strongly correlated states and emergent topological physics.

2D Topological insulator

Two-dimensional topological insulators, such as 1T′-WTe₂, host helical edge states in which electrons with opposite spins propagate in opposite directions. We aim to identify new 2D topological insulators with larger gaps and to couple their edge states to superconductors for realizing novel topological superconducting phases.