Nonconventional odd-denominator fractional quantum hall states in the second landau level

A. Kumar; G. A. Csáthy; M. J. Manfra; L. N. Pfeiffer; K. W. West

doi:10.1103/PhysRevLett.105.246808

Nonconventional odd-denominator fractional quantum hall states in the second landau level

A. Kumar, G. A. Csáthy, M. J. Manfra, L. N. Pfeiffer, K. W. West

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124 Scopus citations

Abstract

We report the observation of a new fractional quantum Hall state in the second Landau level of a two-dimensional electron gas at the Landau level filling factor ν=2+6/13. We find that the model of noninteracting composite fermions can explain the magnitude of gaps of the prominent 2+1/3 and 2+2/3 states. The same model fails, however, to account for the gaps of the 2+2/5 and the newly observed 2+6/13 states suggesting that these two states are of exotic origin.

Original language	English (US)
Article number	246808
Journal	Physical review letters
Volume	105
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevLett.105.246808
State	Published - Dec 10 2010
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.105.246808

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abstract = "We report the observation of a new fractional quantum Hall state in the second Landau level of a two-dimensional electron gas at the Landau level filling factor ν=2+6/13. We find that the model of noninteracting composite fermions can explain the magnitude of gaps of the prominent 2+1/3 and 2+2/3 states. The same model fails, however, to account for the gaps of the 2+2/5 and the newly observed 2+6/13 states suggesting that these two states are of exotic origin.",

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AU - Csáthy, G. A.

AU - Manfra, M. J.

AU - Pfeiffer, L. N.

AU - West, K. W.

PY - 2010/12/10

Y1 - 2010/12/10

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AB - We report the observation of a new fractional quantum Hall state in the second Landau level of a two-dimensional electron gas at the Landau level filling factor ν=2+6/13. We find that the model of noninteracting composite fermions can explain the magnitude of gaps of the prominent 2+1/3 and 2+2/3 states. The same model fails, however, to account for the gaps of the 2+2/5 and the newly observed 2+6/13 states suggesting that these two states are of exotic origin.

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Nonconventional odd-denominator fractional quantum hall states in the second landau level

Abstract

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