Quantum geometry-driven photogalvanic responses in semi-Dirac systems
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The abstract explicitly identifies quantum geometry as the basis for a theoretical study of photogalvanic responses in semi-Dirac systems.
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Author(s): Bristi Ghosh, Malay Bandyopadhyay, and Snehasish Nandy The photogalvanic effect (PGE), a fundamental nonlinear optical phenomenon in noncentrosymmetric materials, generates direct photocurrent under polarized light. Using quantum kinetic theory within the relaxation-time approximation, we theoretically investigate the PGE as a probe of quantum geometry … [Phys. Rev. B 114, 105113] Published Wed Aug 12, 2026