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Gervais G, Engel LW, Stormer HL, et al. Competition between a fractional quantum hall liquid and bubble and Wigner crystal phases in the third Landau level. Phys Rev Lett. 2004;93(26):266804doi: 10.1103/PhysRevLett.93.266804.
Gervais, G., Engel, L. W., Stormer, H. L., Tsui, D. C., Baldwin, K. W., West, K. W., & Pfeiffer, L. N. (2004). Competition between a fractional quantum hall liquid and bubble and Wigner crystal phases in the third Landau level. Physical review letters, 93(26), 266804. https://doi.org/10.1103/PhysRevLett.93.266804
Gervais, G, et al. "Competition between a fractional quantum hall liquid and bubble and Wigner crystal phases in the third Landau level." Physical review letters vol. 93,26 (2004): 266804. doi: https://doi.org/10.1103/PhysRevLett.93.266804
Gervais G, Engel LW, Stormer HL, Tsui DC, Baldwin KW, West KW, Pfeiffer LN. Competition between a fractional quantum hall liquid and bubble and Wigner crystal phases in the third Landau level. Phys Rev Lett. 2004 Dec 31;93(26):266804. doi: 10.1103/PhysRevLett.93.266804. Epub 2004 Dec 21. PMID: 15698005.
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Phys Rev Lett. 2004 Dec 31;93(26):266804. doi: 10.1103/PhysRevLett.93.266804. Epub 2004 Dec 21.

Competition between a fractional quantum hall liquid and bubble and Wigner crystal phases in the third Landau level.

Physical review letters

G Gervais, L W Engel, H L Stormer, D C Tsui, K W Baldwin, K W West, L N Pfeiffer

Affiliations

  1. Department of Physics and Department of Applied Physics, Columbia University, New York, New York 10027, USA.

PMID: 15698005 DOI: 10.1103/PhysRevLett.93.266804

Abstract

Magnetotransport measurements were performed in an ultrahigh mobility GaAs/AlGaAs quantum well of density approximately 3.0 x 10(11) cm(-2). The temperature dependence of the magnetoresistance Rxx was studied in detail in the vicinity of nu=9/2. In particular, we discovered new minima in Rxx at a filling factor nu approximately 41/5 and 44/5, but only at intermediate temperatures 80 approximately less than T approximately less than 120 mK. We interpret these as evidence for a fractional quantum Hall liquid forming in the N=2 Landau level and competing with bubble and Wigner crystal phases favored at lower temperatures. Our data suggest that a magnetically driven insulator-insulator quantum phase transition occurs between the bubble and Wigner crystal phases at T=0.

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