Effect of transverse electric field on the longitudinal current–voltage characteristic of graphene superlattice

被引：0
|
作者：
S. V. Kryuchkov
E. I. Kukhar’
机构：
[1] Volgograd State Socio-Pedagogical University,
[2] Volgograd State Technical University,undefined
来源：
Semiconductors | 2016年 / 50卷
关键词：
Transverse Electric Field; Negative Differential Conductivity; Graphene Superlattice; Negative Effective Mass; Superlattice Axis;
D O I：
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学科分类号：
摘要：
The current density induced along the axis of graphene superlattice in the presence of ac and dc electric fields has been calculated. The dc electric field vector is assumed to have both transverse and longitudinal components with respect to the superlattice axis. The constant component of the current density is shown to oscillate with a change in the ac field amplitude. The longitudinal current–voltage characteristic of graphene superlattice contains a portion with negative differential conductivity. The maximum of the longitudinal current–voltage characteristic shifts to larger values of the longitudinal component of dc field with an increase in the transverse component of electric field.
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页码：217 / 221
页数：4
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