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Physical Review B
We study conductance fluctuations in low-temperature, vertical transport through quantum Hall multilayers. The mesas studied are fabricated from a 50-period multilayer in which 150 Å GaAs wells alternate with 150 Å AlGaAs barriers that are delta-doped at their centers. We find qualitatively different temperature dependences of the variance, ␦G 2 , measured near the centers of the = 2 and = 1 quantum Hall states, with non-monotonic variation in ␦G 2 ͑T͒ at = 1. The observed temperaturedoi:10.1103/physrevb.70.235343 fatcat:k33mujypfzcplhegkv2jhcic2a