ENHANCEMENT OF WIGNER CRYSTALLIZATION IN MULTIPLE-QUANTUM-WELL STRUCTURES

被引：141
|
作者：
SWIERKOWSKI, L
NEILSON, D
SZYMANSKI, J
机构：
[1] POLISH ACAD SCI,INST PHYS,PL-02668 WARSAW,POLAND
[2] TELECOM AUSTRALIA,RES LABS,CLAYTON,VIC 3168,AUSTRALIA
来源：
PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 02期
关键词：
CHARGE-DENSITY WAVES; GROUND-STATE; ELECTRON-GAS;
D O I：
10.1103/PhysRevLett.67.240
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We show that the density for Wigner crystallization to occur for the two-dimensional electron liquid in zero magnetic field can be increased in suitable multiple-quantum-well structures. Data from Monte Carlo calculations are used to determine the properties of each layer in isolation, and the layers interact through Coulomb forces. With this mechanism the maximum solidification density can be raised by as much as a factor of 3. At higher densities, charge-density-wave ground states can occur.
引用
收藏
页码：240 / 243
页数：4
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