[23a-B201-1~12] 10.4 Spintronics in semiconductor, topological material, superconductor, and multiferroics

▲ [23a-B201-6] Pulsed Laser Induced Chirality Switching in Tellurium Thin Films

〇(M1)Haruo Kondo¹, Makoto Shoshin¹, Masashi Kawaguchi¹, Masamitsu Hayashi¹ (1.The Univ. of Tokyo)

Keywords:chiral crystal, pulsed laser

Technologies based on ultrashort pulsed laser have attracted significant interest recently. We have prepared thin films of elemental tellurium (Te), which is known for its chiral crystal structure, and studied the effects of irradiation of circularly polarized ultrashort pulsed laser on the crystal structure. The Kerr microscopic images of Te thin films showed an optical response that is dependent on the polarization of the incident light. We infer that irradiation of pulsed laser changed the image contrast of the Te thin film. In the presentation, we discuss the mechanism behind the optical response of the Te thin films.