Transition from =8/5 to =5/3 in the low Zeeman energy limit
Abstract
Skyrmions in the FQHE at filling fractions above =1/3 are studied within the anyon model and by exact diagonalization. Relations to the composite fermion theory are pointed out. We find that unpolarized quasiparticles above =1/3 are stable below B≈ 0.02T. At low Zeeman energy the polarization in the range =8/5 ... 5/3 is found to be a linear function of the filling factor. We also reexamine the energy and wave function of skyrmions at =1 by a new method.
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