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Spontaneous stripe order at certain even-denominator fractions in the lowest Landau level

Seung-Yeop Lee·Vito W. Scarola·J. K. Jain
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Abstract

An understanding of the physics of half or quarter filled lowest Landau level has been achieved in terms of a Fermi sea of composite fermions, but the nature of the state at other even-denominator fractions has remained unclear. We investigate in this work Landau level fillings of the form $ν=(2n+1)/(4n+4)$, which correspond to composite fermion fillings $ν^*=n+1/2$. By considering various plausible candidate states, we rule out the composite-fermion Fermi sea and paired composite-fermion state at these filling factors, and predict that the system phase separates into stripes of $n$ and $n+1$ filled Landau levels of composite fermions.

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Seung-Yeop Lee, Vito W. Scarola, J. K. Jain. 2001-04-11. Spontaneous stripe order at certain even-denominator fractions in the lowest Landau level. https://arxiv.org/abs/cond-mat/0104210

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