Key points are not available for this paper at this time.
Spin configurations of fractions z<<2 are examined by angular and n-dependent activation studies. Energy gaps () and intercepts ₗₗ^c () that probe the quasiparticle charge e^* quantify a dramatic difference between (4/3 and (5/3 states consistent with assignments (4/3, and (5/3 (, =zero, maximum polarization). A field-induced phase transition ₃^4₃^4 (partial polarization) in which e^* changes from e/3 to e/5 is mapped out. The (7/5 state formed from e/3 quasiparticles is destroyed at the (4/3 transition. High-order assignments ₅^7 (or), ₅^8, ₇^10, and ₇^11 are consistent with experiment.
Clark et al. (Mon,) studied this question.