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Pinning modes and interlayer correlation in high magnetic field bilayer Wigner solids

Zhihai Wang·Yong P. Chen·L. W. Engel·D. C. Tsui·E. Tutuc·M. Shayegan
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Abstract

We report studies of pinning mode resonances in the low total Landau filling (ν) Wigner solid of a series of bilayer hole samples with negligible interlayer tunneling, and with varying interlayer separation d. Comparison of states with equal layer densities (p,p) to single layer states (p,0) produced {in situ} by biasing, indicates that there is interlayer quantum correlation in the solid at small d. Also, the resonance frequency at small d is decreased just near ν=1/2 and 2/3, indicating the importance in the solid of correlations related to those in the fractional quantum Hall effects.

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Zhihai Wang, Yong P. Chen, L. W. Engel, D. C. Tsui, E. Tutuc, M. Shayegan. 2006-11-27. Pinning modes and interlayer correlation in high magnetic field bilayer Wigner solids. https://doi.org/10.1103/physrevlett.99.136804

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