PHONONS OF THE 2D WIGNER CRYSTAL IN STRONG MAGNETIC-FIELD FROM DENSITY FUNCTIONAL THEORY

被引：3

作者：

FERCONI, M

VIGNALE, G

机构：

[1] Department of Physics and Astronomy, University of Missouri-Columbia, Columbia, MO

来源：

EUROPHYSICS LETTERS | 1992年 / 20卷 / 05期

关键词：

COLLECTIVE EXCITATIONS (INC PLASMONS AND OTHER CHARGE-DENSITY EXCITATIONS); GENERAL THEORIES AND COMPUTATIONAL TECHNIQUES; CHARGE-DENSITY-WAVE SYSTEMS;

D O I：

10.1209/0295-5075/20/5/013

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A density functional approach is developed to evaluate the phonon frequencies of the 2D Wigner crystal (WC) in the presence of a strong magnetic field. Using this method we are able to include the effect of electronic correlation on the dispersion relations. The calculated phonon frequencies are compared with previous theoretical results. The effect of correlation on the stability of the crystal is discussed.

引用

页码：457 / 462

页数：6

共 21 条

[1]

ANDREI EY, 1989, PHYS REV LETT, V62, P1926, DOI 10.1103/PhysRevLett.62.1926

[2] SOME STATIC AND DYNAMICAL PROPERTIES OF A 2-DIMENSIONAL WIGNER CRYSTAL [J].