6 papers
Spin-orbit coupling driven topological superconductivity in twisted bilayer graphene-WSe heterostructures
Kamalesh Bera, Arijit Saha, Tanay Nag
Commencing from the low-energy Bistritzer-MacDonald continuum model of twisted bi-layer graphene (tBLG) with proximity-induced Ising, Rashba, and intrinsic spin-orbit couplings (SO…
Chiral topological superconductivity in twisted bilayer and double bilayer graphene
Kamalesh Bera, Tanay Nag, Arijit Saha
We present a theoretical investigation of the emergence of chiral topological superconductivity in small-angle twisted bilayer graphene (tBLG) and twisted double bilayer graphene (…
Generation and time evolution of anomalous Floquet Majorana flat edge modes in two-dimensional noncolinear magnet-superconductor heterostructures
Kamalesh Bera, Priyanka Mohan, Arijit Saha
We theoretically investigate the realization of gapless Floquet topological superconducting phases in a two-dimensional magnet-superconductor heterostructure (2D Shiba lattice) in…
Non-Hermitian band topology in twisted bilayer graphene aligned with hexagonal boron nitride
Kamalesh Bera, Debasish Mondal, Arijit Saha +1
Utilizing the established Bistritzer-MacDonald model for twisted bilayer graphene (tBLG), we theoretically investigate the non-Hermitian (NH) topological properties of this in the…
Thermoelectric properties of magic angle twisted bilayer graphene-superconductor hetero-junction: effect of valley polarization and trigonal warping
Kamalesh Bera, Pritam Chatterjee, Priyanka Mohan +1
We theoretically investigate the thermoelectric properties (electronic contribution) of a normal-superconductor (NS) hybrid junction, where the normal region consists of magic-angl…
Tailoring topological band properties of twisted double bilayer graphene: effects due to spin-orbit coupling
Kamalesh Bera, Priyanka Mohan, Arijit Saha
Our theoretical study unfolds the topological phase transitions (within bands of the Moiré super-lattice) in small angle twisted double bilayer graphene (tDBLG) under the influenc…