Partially spin polarized quantum Hall effect in the filling factor range 1/3 < nu < 2/5

Details Partially spin polarized quantum Hall effect in the filling factor range 1/3 < nu < 2/5 Partially spin polarized quantum Hall effect in the filling factor range 1/3 < nu < 2/5

2003-03-25

arxiv.org/abs/cond-mat/0303517v1

Phys. Rev. B, Vol. 67, 121305(R) (2003)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevB.67.121305

The residual interaction between composite fermions (CFs) can express itself through higher order fractional Hall effect. With the help of diagonalization in a truncated composite fermion basis of low-energy many-body states, we predict that quantum Hall effect with partial spin polarization is possible at several fractions between $\nu=1/3$ and $\nu=2/5$. The estimated excitation gaps are approximately two orders of magnitude smaller than the gap at $\nu=1/3$, confirming that the inter-CF interaction is extremely weak in higher CF levels.

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