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VOLUME 87 (2008) | ISSUE 10 | PAGE 669
Fractional Quantum Hall Effect and vortex lattices
PACS: 73.43.-f
Abstract
It is demonstrated that all observed fractions at moderate Landau level fillings for the quantum Hall effect can be obtained without recourse to the phenomenological concept of composite fermions. The possibility to have the special topologically nontrivial many-electron wave functions is considered. Their group classification indicates the special values of of electron density in the ground states separated by a gap from excited states.