▎ 摘　　要

We report the first cyclotron resonance study of monolayer graphene under double-moire potentials in which the crystal axis of graphene is nearly aligned to those of both the top and bottom hexagonal boron nitride (h-BN) layers. Under mid- infrared light irradiation, we observe cyclotron resonance absorption with the following unique features: (1) cyclotron resonance magnetic field B-CR is entirely different from that of nonaligned monolayer graphene, (2) Bat exhibits strong electron- hole asymmetry, and (3) splitting of But is observed for vertical bar nu vertical bar < 1, with the split maximum at vertical bar nu vertical bar = 1, resulting in eyeglass-shaped trajectories. These features are well explained by considering the large bandgap induced by the double moire potentials, the electron-hole asymmetry in the Fermi velocity, and the Fermi-level-dependent enhancement of spin gaps, which suggests a large electron-electron correlation contribution in this system.