Publications [#318412] of Albert M. Chang

Papers Published
  1. Chang, AM; Paalanen, MA; Tsui, DC; Störmer, HL; Hwang, JCM, Fractional quantum Hall effect at low temperatures, Physical Review B - Condensed Matter and Materials Physics, vol. 28 no. 10 (1983), pp. 6133-6136 [doi] .

    We report a systematic study of the 23 fractional quantum Hall effect at low temperatures (65-770 mK) for a GaAs-AlxGa1-xAs sample of very high mobility (106 cm2/V sec). We find the 23 Hall plateau to be accurately quantized. The diagonal and Hall resistivities are observed to be activated at each given filling factor ν=nheB around 23. The activation energy has a maximum value, Δmax, at ν=23 and decreases to each side as ν moves away. By varying the sample mobility and density simultaneously with a backgate bias, we find Δmax strongly mobility and magnetic field dependent. © 1983 The American Physical Society.