J. Dziarmaga et M. Hellmund, UNPOLARIZED QUASIELECTRONS AND THE SPIN POLARIZATION AT FILLING FRACTIONS BETWEEN NU=1 3 AND NU=2/5/, Physical review. B, Condensed matter, 56(19), 1997, pp. 12116-12119
We prove that for a hard-core interaction the ground-state spin polari
zation in the low Zeeman energy limit is given by P=2/nu-5 for filling
fractions in the range 1/3 less than or equal to nu less than or equa
l to 2/5. The same result holds for a Coulomb potential except for mar
ginally small magnetic fields. At the magnetic fields B<20 T unpolariz
ed quasielectrons can manifest themselves by a characteristic peak in
the I-V characteristics for tunneling between two nu=1/3 ferromagnets.