3 papers
cond-mat.mes-hall2026
Quantum geometry-driven photogalvanic responses in semi-Dirac systems
Bristi Ghosh, Malay Bandyopadhyay, Snehasish Nandy
The photogalvanic effect (PGE), a fundamental nonlinear optical phenomenon in non-centrosymmetric materials, generates direct photocurrent under polarized light. Using quantum kine…
cond-mat.mes-hall2024
Optical pumping controls anisotropic response in semi-Dirac system
Bristi Ghosh, Malay Bandopadhyay, Ashutosh Singh
Low-energy Fermions in semi-Dirac systems depict linear momentum dispersion along one direction while having the features of parabolic dispersion in the other direction. Equilibriu…
cond-mat.mes-hall2023
Microscopic analysis of relaxation behavior in nonlinear optical conductivity of graphene
Bristi Ghosh, Sushanta Dattagupta, Malay Bandyopadhyay
We present here a general formulation for the interband dynamical optical conductivity in the nonlinear regime of graphene in the presence of a quantum bath comprising phonons and…