[We-A2-B] Emerging phenomena in 2D materials

12:15 PM - 12:30 PM JST(3:15 AM - 3:30 AM UTC)

[We-A2-B-06] Electrically Switchable Dirac Masses in Twisted Bilayer Graphene with a Unidirectional Superlattice

Hanzhou Tan^1,2, 〇Pilkyung Moon Moon^1,2,3 (1. New York Univ. Shanghai (China), 2. NYU-ECNU Inst. of Phys. at NYU Shanghai (China), 3. Hanyang Univ. (Korea))

Twisted bilayer graphene with a layer-dependent 1D modulation exhibits electrically switchable Dirac gaps. At Dirac-Dirac resonance, odd harmonic gaps same-chirality cone pairs, whereas even harmonic gaps opposite-chirality pairs. The modulation can invert the relative chirality and hence the active mass channel is electrically switchable.