Fig. 5: Observation of the quantum Hall state in the two-terminal graphene/hBN/PMNPT device.
From: Charge carrier modulation in graphene on ferroelectric single-crystal substrates
a The ID–VG curves for various VG sweep ranges at 2 K without a magnetic field. b The two-terminal quantum Hall conductance at 2 K and 14 Tesla. c The P–E curve as a function of temperature. d The ID–VG curves at 2 K under various magnetic fields. The inset shows the enlarged quantum Hall conductance data at 10 Tesla. e The peak positions of the derivatives of the ID–VG curves for 10 (red circles) and 14 Tesla (black circles) in (d), showing a delay in the gate voltage in the development of the next quantum Hall states above 0 V.
