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Microwave resonance of the reentrant insulating quantum Hall phases in the 1st excited Landau Level

R. M. Lewis·Yong P. Chen·L. W. Engel·D. C. Tsui·L. N. Pfeiffer·K. W. West
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Abstract

We present measurements of the real diagonal microwave conductivity of the reentrant insulating quantum Hall phases in the first excited Landau level at temperatures below 50 mK. A resonance is detected around filling factor $ν=2.58$ and weaker frequency dependence is seen at $ν=2.42$ and 2.28. These measurements are consistent with the formation of a bubble phase crystal centered around these $ν$ at very low temperatures.

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R. M. Lewis, Yong P. Chen, L. W. Engel, D. C. Tsui, L. N. Pfeiffer, K. W. West. 2004-11-24. Microwave resonance of the reentrant insulating quantum Hall phases in the 1st excited Landau Level. https://doi.org/10.1103/physrevb.71.081301

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