Signatures of multi-band effects in high-harmonic generation in monolayer MoS<sub>2</sub>
ORAL
Abstract
High-harmonic generation (HHG) in solids has been touted as a way to probe ultrafast dynamics and crystal symmetries in condensed matter systems. Here, in a combined theoretical and experimental effort, we illustrate that the polarization properties of high harmonics in monolayer MoS2 encode the dynamical symmetry properties of the crystal and laser, as well as material-specific properties such as the vectorial character of the transition dipole moments from different valence-conduction-band pairs. Our findings and methodology can readily be generalized to other condensed-matter systems, and relevant for the materials community where this new spectroscopy is expected to find increasingly applications to uncover material properties.
*National Science Foundation (PHY-1713671 and PHY-2110317).Alexander von Humboldt Foundation.National Science Foundation Graduate Research Fellowship Program.Federal Ministry of Education and Research (BMBF) under "Make our Planet Great Again - German Research Initiative" (Grant No. 57427209 "QUESTforENERGY") implemented by DAAD.W. M. Keck Foundation.UC Office of the President within the Multicampus Research Programs and Initiatives (M21PL3263).Laboratory Directed Research and Development Program at Berkeley Lab (107573).CRC 1375 "NOA–Nonlinear optics down to atomic scales" funded by the Deutsche Forschungsgemeinschaft (DFG).DFG Collaborative Research Center SFB 1375 'NOA' Project B2.U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences Early Career Research Program under Award Number DE-SC0021965.
–
Publication:Lun Yue, Richard Hollinger, Can B. Uzundal, Bailey Nebgen, Ziyang Gan, Emad Najafidehaghani, Antony George, Christian Spielmann, Daniil Kartashov, Andrey Turchanin, Diana Y. Qiu, Mette B. Gaarde and Michael Zuerch, arXiv:2112.13032 (2021)
