Fig. 2: Measurements at B = 0 and ν = 1.
a Differential conductance measurements at zero magnetic field in the Coulomb blockade regime. The height of the diamonds gives the charging energy of \(\frac{{e}^{2}}{C}\approx 95\) μeV. Additionally, the spacing between crossings at zero bias yields \(\frac{1}{\gamma }\approx 5.1\) mV. b Interferometer conductance oscillations versus magnetic field and gate voltage at ν = 1. The magnetic field oscillation period is larger near the plateau center, indicating an incompressible bulk and moderate bulk-edge coupling. In the compressible regions at high and low fields, the interference oscillation period yields an effective area of A ≈ 0.26 μm2 and \(\alpha=\frac{\partial A}{\partial {V}_{PG}}\approx 0.198\) μm2 V −1.
