Pinning modes and interlayer correlation in high-magnetic-field bilayer Wigner solids
Pinning modes and interlayer correlation in high-magnetic-field bilayer Wigner solids
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DOI：
10.1103/physrevlett.99.136804
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发表时间：
2007-09-28
影响因子：
8.6
通讯作者：
Shayegan, M.
中科院分区：
文献类型：
--
作者：
Wang, Zhihai;Chen, Yong P.;Shayegan, M.
我们报告了一系列双层孔样品的低总朗道填充 (nu) 维格纳固体中钉扎模式共振的研究，这些样品具有可忽略的层间隧道效应和不同的层间间距 d。等层密度态 (p,p) 与偏置原位产生的单层态 (p,0) 的比较表明，在小 d 时固体中存在层间量子相关性。此外，小 d 处的谐振频率恰好在 nu=1/2 和 2/3 附近降低，这表明与分数量子霍尔效应相关的相关性在固体中的重要性。
We report studies of pinning mode resonances in the low total Landau filling (nu) 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 nu=1/2 and 2/3, indicating the importance in the solid of correlations related to those in the fractional quantum Hall effects.