1:30 PM - 2:00 PM ▲ [9p-Z23-2] [INVITED] Terahertz spectroscopy for dynamics in Dirac and Weyl semimetals toward high-speed electronics and spintronics 〇Ryusuke Matsunaga1, Natsuki Kanda1, Takuya Matsuda1 (1.ISSP. The Univ. Tokyo)