Extended Data Fig. 8: LL spectrum of the spin–valley-flavoured D± valleys in QL BAs.
From: Rashba valleys and quantum Hall states in few-layer black arsenic
a, Spin–valley-flavoured D± valleys in QL BAs under Ez = 0.3 V nm−1. Here, the D− valley is placed on the left side of D+ to highlight the fact that the D± Rashba splitting is centred on the TRIM points of X. b, Flavour-dependent LL spectrum of the D± Rashba valleys, in which LLs are divided into two groups (nI and nII) with opposite τzsz signs. Note that the nI = 0 and nII = 0 LLs are spin non-degenerate, whereas all ni ≠ 0 LLs are doubly degenerate as required by TRS (see Supplementary Note 3).
