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Manifestation of a complex edge excitation structure in the fractional quantum Hall regime at high filling factors

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 نشر من قبل Eduard V. Deviatov
 تاريخ النشر 2007
  مجال البحث فيزياء
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We experimentally study equilibration across the sample edge at high fractional filling factors 4/3, 5/3 under experimental conditions, which allow us to obtain high imbalance conditions. We find a lack of the full equilibration across the edge even in the flat-band situation, where no potential barrier survives at the sample edge. We interpret this result as the manifestation of complicated edge excitation structure at high fractional filling factors 4/3, 5/3. Also, a mobility gap in the $ u_c=1$ incompressible strip is determined in normal and tilted magnetic fields.



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