Presentation Information
[Tu-P-63]Photocurrent response in device-geometry-engineered Anisotropic Van der Waals Metals
〇Yangsong Chen1, Miuko Tanaka1, Jinpei Shown Kolak1, Shunta Aoki1, Yu Dong1, Peng Zhang2, Genda Gu3, Takahiro Morimoto1, Kenji Watanabe4, Takashi Taniguchi4, Yoshihiro Iwasa5, Toshiya Ideue1 (1. The Univ. of Tokyo (Japan), 2. Nanjing Univ. (China), 3. Brookhaven National Lab. (USA), 4. National Inst. for Materials Sci. (Japan), 5. RIKEN (Japan))
Mesoscopic geometry and crystal anisotropy jointly enable zero-bias photocurrent in L-shaped van der Waals semimetals. Corner illumination induces directional currents, absent in straight channels. Enhanced at low temperatures, this reveals a new anisotropic optoelectronic mechanism.