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High harmonic generation in Weyl-Kondo semimetals

ORAL

Abstract

When high-intensity light interacts with solid state materials, nonlinear processes generate higher-order harmonics of the incident light. In the presence of strong correlations, high harmonic generation (HHG) characterizes many-body properties such as coherent excitations & charge dynamics, whereas in topological matter, nontrivial Berry curvature contributes to second harmonic generation (SHG) through interband transitions. In light of the discovery of strong-correlation-driven topology in both experimental1-3 & theoretical4-6 studies of a Weyl-Kondo semimetal (WKSM), we study the HHG of the WKSM. Using a Peierls-substituted noncentrosymmetric periodic Anderson model including spin orbit coupling, we elucidate the effect of strong correlations on the SHG order and its intensity.
1S. Dzsaber et al PRL 118 246601 2017
2S. Dzsaber et al arXiv:1811.02819 2018
3S. Dzsaber et al arXiv:1906.01182 2019
4H.-H. Lai, S. E. Grefe, S. Paschen & Q. Si, PNAS 115 93 2018
5S. E. Grefe, H.-H. Lai, S. Paschen & Q. Si, PRB 101, 075138 2020
6S. E. Grefe, H.-H. Lai, S. Paschen & Q. Si, unpub. 2020; JPS Conf. Proc. 30, 011013 2020

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Presenters

  • Sarah Grefe

    Rice Univ, Los Alamos National Lab, Los Alamos National Laboratory

Authors

  • Sarah Grefe

    Rice Univ, Los Alamos National Lab, Los Alamos National Laboratory

  • Rohit P Prasankumar

    Los Alamos National Laboratory, CINT, Los Alamos National Lab, Center for Integrated Nanotechnologies, Los Alamos National Laboratory

  • Qimiao Si

    Rice Univ, Physics and Astronomy, Rice university, Rice University, Department of Physics and Astronomy, Rice University, Department of Physics & Astronomy, Rice Center for Quantum Materials, Rice University, Houston, Texas 77005, USA

  • Jian-Xin Zhu

    Los Alamos Natl Lab, Los Alamos National Laboratory, Theoretical Division/Center for Integrated Nanotechnology, Los Alamos National Laboratory, Theoretical Division and Center for Integrated Nanotechnologies, Los Alamos National Lab, Center for Integrated Nanotechnologies, Los Alamos National Laboratory