[Th-P] Halide perovskites and organic semiconductors

[Th-P-34] Two-Orbital Tight-Binding Model of One-Dimensional Chiral Organic-Inorganic Hybrid Lead Halide Perovskites

〇Yuya Ominato¹, Tetsuya Furukawa², Ayumi Ishii³, Tetsuaki Itou⁴ (1. WIAS (Japan), 2. IMR, Tohoku Univ. (Japan), 3. Waseda Univ. (Japan), 4. Tokyo Univ. of Sci. (Japan))

We develop a minimal two-orbital tight-binding model for one-dimensional chiral organic-inorganic lead halide perovskites. The model reproduces first-principles band dispersions and spin textures near the gap, providing a low-energy framework to study circularly polarized responses, bulk photovoltaics, and current-induced magnetization.