Second harmonic generation in the Weyl semimetal TaAs from a quantum kinetic equation

• Main Authors: Li, Zhi, Jin, Ya-Qin, Tohyama, Takami, Iitaka, Toshiaki, Zhang, Jiu-Xing, Su, Haibin
• Other Authors: School of Materials Science & Engineering
• Format: Article
• Language: English
• Published: 2018
• Subjects: DRNTU::Engineering::Materials; Second Harmonic Generation; Weyl Semimetal
• Online Access: https://hdl.handle.net/10356/80547; http://hdl.handle.net/10220/46568
• Institution: Nanyang Technological University

We classify the sources of second harmonic generation (SHG) of the Weyl semimetal TaAs by collisionless quantum kinetic equation into three kinds: i.e., injection current from the canonical band dispersion, shift current from a gauge invariant shift vector, and anomalous current from Berry curvature...