Fig. 1: Conductance measurements in the second Landau level.
From: Large composite fermion effective mass at filling factor 5/2
a Conductance versus magnetic field at different temperatures. The most prominent FQH states are indicated by vertical lines. A cartoon of the Corbino sample is shown in the inset. b Zoom-in of the conductance temperature dependence for 5/2 FQH state. The thin green dotted line shows the exact filling factor ν = 5/2 (i.e., ν* = 0), whereas the dashed lines are non-exact filling factors (i.e., ν* ≠ 0) for which specific heat measurements were taken and where the effective mass could be estimated.
