Denitsa Baykusheva and colleauges report theoretical investigations of high-harmonic generation in topological insulators in Phys. Rev. A. The aticle is an Editors' suggestion and is featured in Physics and in a SLAC news article by Glennda Chui. The authors predict sensitivity of strong-field-driven high harmonic emission to the topology of the band structure and exhibits manifestations of spin-orbit interaction. In particular the harmonic emission from the topologically protected surfaces states is enhanced under strong circular polarized pump pulses where the bulk contribution is negligible. This work is a collaboration between Denitsa Baykusheva, David Reis and Shambhu Ghimire of the Stanford PULSE Institute and Alexis Chacón, Dasol Kim and Dong Eon Kim of the Max Planck POSTECH/KOREA Research Initiative in South Korea. Image (c) G. Stewart/SLAC National Accelerator Laboratory.
