Microwave Resonance of the Bubble Phases in [Formula presented] and [Formula presented] Filled High Landau Levels

R. M. Lewis, P. D. Ye, L. W. Engel, D. C. Tsui, L. N. Pfeiffer, K. W. West

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

We have measured the diagonal conductivity, [Formula presented], in the microwave regime of an ultrahigh mobility two dimensional electron system. We find a sharp resonance in [Formula presented] versus frequency when [Formula presented] and the partial filling of the highest Landau level, [Formula presented], is [Formula presented] or [Formula presented] and temperatures [Formula presented]. The resonance appears for a range of [Formula presented] from 0.20 to 0.38 and again from 0.64 to 0.80. The peak frequency [Formula presented] changes from [Formula presented] to [Formula presented] as [Formula presented] is approached. This range of [Formula presented] shows no dependence on [Formula presented] where the resonance is observed. The quality factor, [Formula presented], of the resonance is maximum at about [Formula presented] and 0.74. We interpret the resonance as due to a pinning mode of the bubble phase crystal.

Original languageEnglish (US)
JournalPhysical review letters
Volume89
Issue number13
DOIs
StatePublished - 2002
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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