The excitonic collapse of higher Landau level fractional quantum Hall effect

Details The excitonic collapse of higher Landau level fractional quantum Hall effect The excitonic collapse of higher Landau level fractional quantum Hall effect

2000-11-29

arxiv.org/abs/cond-mat/0011512v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 3 figures. To appear in Phys. Rev. B Rapid Communication

Scientific paper

10.1103/PhysRevB.62.R16259

The scarcity of the fractional quantum Hall effect in higher Landau levels is a most intriguing fact when contrasted with its great abundance in the lowest Landau level. This paper shows that a suppression of the hard core repulsion in going from the lowest Landau level to higher Landau levels leads to a collapse of the energy of the neutral excitation, destabilizing all fractional states in the third and higher Landau levels, and almost all in the second Landau level. The remaining fractions are in agreement with those observed experimentally.

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