3 papers
cond-mat.str-el2026
Zero modes of non-abelian Dirac operator in topologically non-trivial band insulator
Neha Kumari, Sankalpa Ghosh
We show that the local gauge-invariance of the quantum geometric tensor (QGT) defined in the Block-momentum space of a generic -level (sublattice degrees of freedom) band insula…
cond-mat.mes-hall2026
Electronic analogue of Fourier optics with mass-less Dirac fermions scattered by quantum dot lattice
Partha Sarathi Banerjee, Rahul Marathe, Sankalpa Ghosh
The field of electron optics exploits the analogy between the movement of electrons or charged quasiparticles, primarily in two-dimensional materials subjected to electric and magn…
cond-mat.mes-hall2025
Intermediate chiral edge states in quantum Hall Josephson junctions
Partha Sarathi Banerjee, Rahul Marathe, Sankalpa Ghosh
A transfer-matrix-based theoretical framework is developed to study transport in superconductor-quantum Hall-Superconductor (SQHS) Josephson junctions modulated by local potential…