5 papers
Strain-programmable exciton diffusion in moiré heterostructures
Chiho Song, Chiranjit Mondal, Jaebin Lee +4
Moiré superlattices in van der Waals heterostructures have recently gained significant attention as an intriguing platform for studying correlated electronic systems and exotic ex…
Euler Topology in Superconducting Honeycomb Lattices
Rasoul Ghadimi, Chiranjit Mondal, Bohm-Jung Yang
Electronic bands in systems with space-time inversion (IST) symmetry can host nontrivial Euler topology. Here, we investigate the band topology of IST-symmetric superconducting hon…
Evidence for electron localisation in a moiré-of-moiré superlattice
Hangyeol Park, Junhyeok Oh, Rasoul Ghadimi +7
The localisation of electrons in a lattice potential is an quantum-mechanical phenomenon and is often associated with remarkable physical properties of solids involving electron sp…
Quantum Valley Hall effect without Berry curvature
Rasoul Ghadimi, Chiranjit Mondal, Sunje Kim +1
The quantum valley Hall effect (QVHE) is characterized by the valley Chern number (VCN) in a way that one-dimensional (1D) chiral metallic states are guaranteed to appear at the do…
Non-Abelian charge conversion in bilayer binary honeycomb lattice systems
Chiranjit Mondal, Rasoul Ghadimi, Bohm-Jung Yang
In two-dimensional systems with space-time inversion symmetry, Dirac nodes (DNs) carry non-Abelian topological charges which induce intriguing momentum space braiding phenomenon. A…