Fig. 3: Temperature-activated resistivity and phonon-mediated dissipation in the quantum Hall effect.
From: Phonon-mediated room-temperature quantum Hall transport in graphene
a Density of states (DOS) of graphene as a function of energy, at B = 30 T (with a realistic value of LL broadening of 15 K). On top of the DOS we show the Fermi-Dirac distribution, with EF positioned in the middle of the N = 0 and N = 1 LL, at two different temperatures, representative of the experimental range considered. b Temperature-activated longitudinal resistivity in the vicinity of ν = 2, measured in sample D1. c Minimum of ρxx at ν = 2 as a function of temperature, for the hBN-encapsulated devices. The reference data (black diamonds) are from ref. 20. The yellow and dark cyan continuous line are theoretical calculations based on refs. 23,24, respectively (the shading covers resistivity values within the two theoretical calculations). The magnetic field is 30 T (25 T) in the main panel (inset).
