[Th-P1-B] Novel optoelectric phenomena in 2D materials

2:15 PM - 2:30 PM JST(5:15 AM - 5:30 AM UTC)

[Th-P1-B-02] One-Dimensional Electronic States in a Moiré Superlattice of Twisted Bilayer WTe₂

〇Takuto Kawakami¹, Hayato Tateishi², Daiki Yoshida¹, Xiaohan Yang³, Naoto Nakatsuji⁴, Limi Chen⁵, Kohei Aso⁵, Yukiko Yamada-Takamura⁵, Yoshifumi Oshima⁵, Yijin Zhang³, Tomoki Machida³, Koichiro Kato², Mikito Koshino¹ (1. The Univ. of Osaka (Japan), 2. Kyushu Univ. (Japan), 3. The Univ. of Tokyo (Japan), 4. Stony Brook Univ. (USA), 5. JAIST (Japan))

Twisted bilayer 1T'-WTe₂ near 60° forms a stripe-like one-dimensional moiré superlattice. First-principles calculations and an effective model show that lattice relaxation generates varying stripe width and a moiré potential, producing quasi-1D bands near the Fermi level.