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arXiv · 1711.09143

Competing charge density waves probed by non-linear transport and noise in the second and third Landau levels

K. Bennaceur·C. Lupien·B. Reulet·G. Gervais·L. N. Pfeiffer·K. W. West
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Abstract

Charge density waves (CDW) in the second and third Landau levels (LL) are investigated by both non-linear electronic transport and noise. The use of a Corbino geometry ensures that only bulk properties are probed, with no contribution from edge states. Sliding transport of CDWs is revealed by narrow band noise in re-entrant quantum Hall states R2a and R2c of the second LL as well as in pinned CDWs of the third LL. Competition between various phases - stripe, pinned CDW or fractional quantum Hall liquid - in both LL are clearly revealed by combining noise data with maps of conductivity versus magnetic field and bias voltage.

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K. Bennaceur, C. Lupien, B. Reulet, G. Gervais, L. N. Pfeiffer, K. W. West. 2017-12-06. Competing charge density waves probed by non-linear transport and noise in the second and third Landau levels. https://doi.org/10.1103/physrevlett.120.136801

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