Coulomb oscillations in antidots in the integer and fractional quantum hall regimes

A. Kou, C. M. Marcus, L. N. Pfeiffer, K. W. West

Research output: Contribution to journalArticlepeer-review

Abstract

We report measurements of resistance oscillations in micron-scale antidots in both the integer and fractional quantum Hall regimes. In the integer regime, we conclude that oscillations are of the Coulomb type from the scaling of magnetic field period with the number of edges bound to the antidot. Based on both gate-voltage and field periods, we find at filling factor ν=2 a tunneling charge of e and two charged edges. Generalizing this picture to the fractional regime, we find (again, based on field and gate-voltage periods) at ν=2/3 a tunneling charge of (2/3)e and a single charged edge.

Original languageEnglish (US)
Article number256803
JournalPhysical review letters
Volume108
Issue number25
DOIs
StatePublished - Jun 19 2012
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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