Microscopic Theory of the Reentrant IQHE in the First and Second Excited LLs

Physics – Condensed Matter – Mesoscale and Nanoscale Physics

Scientific paper

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4 pages, 4 figures; minor corrections included

Scientific paper

10.1103/PhysRevB.68.241302

We present a microscopic theory for the recently observed reentrant integral quantum Hall effect in the n=1 and n=2 Landau levels. Our energy investigations indicate an alternating sequence of M-electron-bubble and quantum-liquid ground states in a certain range of the partial filling factor of the n-th level. Whereas the quantum-liquid states display the fractional quantum Hall effect, the bubble phases are insulating, and the Hall resistance is thus quantized at integral values of the total filling factor.

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