EVIDENCE FOR 2-DIMENSIONAL QUANTUM WIGNER CRYSTAL
EVIDENCE FOR 2-DIMENSIONAL QUANTUM WIGNER CRYSTAL
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DOI：
10.1103/physrevlett.65.2189
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发表时间：
1990-10-22
影响因子：
8.6
通讯作者：
CUNNINGHAM, JE
中科院分区：
文献类型：
--
作者：
GOLDMAN, VJ;SANTOS, M;CUNNINGHAM, JE
我们报道了在极端磁量子极限下，低无序二维电子系统中电场阈值传导和相关交流电压（宽带噪声）产生的观测结果。我们解释这些现象的形成的一个钉扎量子维格纳晶体的明确证据，并确定其熔化相图的阈值和噪声行为在较高的温度下的消失。
We report observations of an electric-field threshold conduction and of related ac voltage (broad-band noise) generation in low-disorder two-dimensioanl electron systems in the extreme magnetic quantum limit. We interpret these phenomena as definitive evidence for formation of a pinned quantum Wigner crystal and determine its melting phase diagram from the disappearance of threshold and noise behavior at higher temperatures.