Microscopic origin of the next generation fractional quantum Hall effect

Details Microscopic origin of the next generation fractional quantum Hall effect Microscopic origin of the next generation fractional quantum Hall effect

2004-04-03

arxiv.org/abs/cond-mat/0404079v1

Phys.Rev.Lett. 92 (2004) 196806

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1103/PhysRevLett.92.196806

Most of the fractions observed to date belong to the sequences $\nu=n/(2pn\pm 1)$ and $\nu=1-n/(2pn\pm 1)$, $n$ and $p$ integers, understood as the familiar {\em integral} quantum Hall effect of composite fermions. These sequences fail to accommodate, however, many fractions such as $\nu=4/11$ and 5/13, discovered recently in ultra-high mobility samples at very low temperatures. We show that these "next generation" fractional quantum Hall states are accurately described as the {\em fractional} quantum Hall effect of composite fermions.

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