OBSERVATION OF A GIANT DIELECTRIC-CONSTANT IN THE REENTRANT INSULATING PHASE OF 2-DIMENSIONAL ELECTRONS

被引：15

作者：

LI, YP

TSUI, DC

SAJOTO, T

ENGEL, LW

SANTOS, M

SHAYEGAN, M

机构：

[1] Department of Electrical Engineering, Princeton University, Princeton

来源：

SOLID STATE COMMUNICATIONS | 1995年 / 95卷 / 09期

关键词：

HETEROJUNCTION; FRACTIONAL QUANTUM HALL EFFECT; QUANTUM LOCALIZATION;

D O I：

10.1016/0038-1098(95)00319-3

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have measured the radio frequency Re sigma(xx) and Im sigma(xx) of a high mobility two-dimensional electron system (2DES) and observed a giant dielectric constant (kappa(xx) > 1 x 10(4)) in the reentrant insulating phase (RIP) around the 1/5 fractional quantum Hall liquid. Results from temperature and excitation-level studies provide new evidence for the Wigner crystal (WC) model of the RIP, where the WC is strongly pinned by residual impurities in close proximity to the 2DES.

引用

页码：619 / 623

页数：5