Extended Data Fig. 3: Contrast inversion and emergence of the Kekulé bond order.
From: Imaging tunable quantum Hall broken-symmetry orders in graphene
3 × 3 nm2 STM images during which we changed the bias voltage as shown in the bottom insets (the current color bars are tuned separately for each half of the images). a, We start (bottom) at Vb = 32 mV (LL0+) and switch (top) to Vb = −12 mV (LL0−) to observe a contrast inversion of the KB lattice. b, We start (top) at Vb = 200 mV (LL1) and switch (bottom) to Vb = 20 mV (LL0+) and observe the emergence of the KB order from the honeycomb lattice. Scale bars for both images are 500 pm.
