As the electronic charge distribution in a wide quantum well is tuned from a single-layer through an interacting bilayer configuration to weakly-coupled parallel layers, we observe an insulating phase concurrently manifesting a dramatic evolution. The data reveal that interlayer interactions, playing a crucial role, are able to stabilize a {\it correlated bilayer} electron insulator, thus providing tantalizing evidence of a pinned bilayer Wigner solid phase crystallizing at total filling factor ν as large as 0.54 (ν>41 in each layer).
@article{arxiv.cond-mat/9603008,
title = {Evidence for a Bilayer Quantum Wigner Solid},
author = {H. C. Manoharan and Y. W. Suen and M. B. Santos and M. Shayegan},
journal= {arXiv preprint arXiv:cond-mat/9603008},
year = {2009}
}
Comments
10 pages, REVTeX, submitted to Phys. Rev. Lett.; 4 figures (1 color) and text available for viewing (HTML) or download (Postscript) at http://www.ee.princeton.edu/~hari/