[Th-P] 2D matrials

[Th-P-17] Quantum Interference in Valley Hall Regime Observed in MoS₂ Hall Bar

Yusuke Nakamura¹, Yusuke Nakayama¹, Takeru Kobayashi¹, David K. Ferry², Jonathan P. Bird^1,3, 〇Nobuyuki Aoki¹ (1. Chiba Univ. (Japan), 2. Arizona State Univ. (USA), 3. SUNY Buffalo (USA))

We report quantum interference effects in the valley Hall regime, observed as oscillations in the non-local voltage of a MoS₂ Hall bar at low temperatures. Although the behavior resembles UCF, we find no dependence on magnetic field. We discuss the possible origin of interference and coherence properties of the valley current.