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Enhancement of Coulomb drag away from half filled Landau levels

Lilly, M. P. and Eisenstein, J. P. and Pfeiffer, L. N. and West, K. W. (1999) Enhancement of Coulomb drag away from half filled Landau levels. . (Unpublished)

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Coulomb drag between two parallel two dimensional electron gases has been measured at high magnetic fields in samples with two different layer spacings. As the layer filling factor deviates from ν = 1/2, we find that the magnitude of the drag is enhanced quadratically with Δν = ν - 1/2, and the curvature of the enhancement is insensitive to both the sign of Δν and the spacing between the layers. Our results suggest that the enhancement is not due to non-perturbative interlayer correlations.

Item Type:Report or Paper (Discussion Paper)
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Additional Information:We acknowledge useful discussions with A. Stern. This work was supported by the NSF via DMR-9700945.
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Record Number:CaltechAUTHORS:20190521-085346681
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:95628
Deposited By: Tony Diaz
Deposited On:21 May 2019 17:53
Last Modified:03 Oct 2019 21:15

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