Journal
PHYSICAL REVIEW LETTERS
Volume 103, Issue 25, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.103.256802
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Funding
- NSF [DMR-0904117, MRSEC DMR0819860, DMR0654118]
- DOE
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We report the observation of developing fractional quantum Hall states at Landau level filling factors nu=1/2 and 1/4 in electron systems confined to wide GaAs quantum wells with significantly asymmetric charge distributions. The very large electric subband separation and the highly asymmetric charge distribution at which we observe these quantum Hall states, together with the fact that they disappear when the charge distribution is made symmetric, suggest that these are one-component states, possibly described by the Moore-Read Pfaffian wave function.
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