Second-order response of a uniform three-dimensional electron gas to a longitudinal electric field

被引：5

作者：

Mikhailov, Sergey A. ^{[1
]}

机构：

[1] Univ Augsburg, Inst Phys, D-86135 Augsburg, Germany

来源：

ANNALEN DER PHYSIK | 2012年 / 524卷 / 3-4期

关键词：

Nonlinear electromagnetic response; second harmonic; polarizability; uniform electron gas; plasmons; 2-DIMENSIONAL PLASMONS; INVERSION-LAYERS; STOPPING POWER; QUANTUM WIRES; GRAPHENE; EXCITATIONS; DEPENDENCE; DISPERSION; SYSTEMS; CHARGE;

D O I：

10.1002/andp.201100260

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The linear electromagnetic response of a uniform three-dimensional electron gas to a longitudinal electric field is determined by the known Lindhard dielectric function ?q?. Using a similar approach, we derive exact analytical expressions for the second-order nonlinear electromagnetic response of the electron gas. We calculate the second-order polarizability a(2)q? of the system and, within the self-consistent-field approach, the second-order response function, analogous to ?q?. The best conditions for the observation of the second-harmonic generation are analyzed.

引用

页码：182 / 187

页数：6