Comment on ``Activation Gaps and Mass Enhancement of Composite Fermions''

Details Comment on ``Activation Gaps and Mass Enhancement of Composite Fermions'' Comment on ``Activation Gaps and Mass Enhancement of Composite Fermions''

1998-12-10

arxiv.org/abs/cond-mat/9812181v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1103/PhysRevLett.83.1485

In a recent Letter (Phys. Rev. Lett. 81, 4200 (1998)) Park and Jain presented results of gap calculations for polarized states at \nu=1/3, 2/5, 3/7 and 4/9. They computed the effects on the gaps due the finite width of the interfacial wave function (wf). In this Comment, it is shown that the reduction of the gaps due to the finite width of the wf is overestimated by about a factor of two. The agreement between theoretical and experimental gap values cannot be taken seriously, but results from an incorrect determination of the width parameter.

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