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
收藏
页码：182 / 187
页数：6
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