Abstract
The new magnetotransport measurements performed in an ultrahigh mobility GaAs/AlGaAs specimen were discussed. It was found that the magnetotransport measurements were performed on a 300 Å wide modulation-doped GaAs/AlGaAs quantum well of density n ≃ 3.0 × 1011cm-2 and the ultrahigh mobility μ≃ 27 × 106 cm2/V s. The evidences were interpreted for a fractional quantum Hall liquid forming in the N = 2 Landau level. The results show that a magnetically driven insulator-insulator quantum phase transition occurred between the bubble and Wigner crystal phases at T = 0.
| Original language | English (US) |
|---|---|
| Article number | 266804 |
| Journal | Physical review letters |
| Volume | 93 |
| Issue number | 26 I |
| DOIs | |
| State | Published - Dec 31 2004 |
| Externally published | Yes |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy
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