An FDTD Model of Graphene Intraband Conductivity

被引：29
作者：
Salski, Bartlomiej [1 ]
机构：
[1] Warsaw Univ Technol, Inst Radioelect, PL-00665 Warsaw, Poland
来源：
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2014年 / 62卷 / 08期
关键词：
Computational electromagnetics; finite difference time domain (FDTD); graphene; gyrotropy; TIME-DOMAIN ANALYSIS; DISPERSION; SIMULATION; TRANSPORT; STABILITY; DEVICES; MEDIA;
D O I：
10.1109/TMTT.2014.2331620
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A novel finite-difference time-domain (FDTD) model of magnetized graphene gyrotropic conductivity is proposed in this paper. The model, derived with the aid of auxiliary differential equations, takes into account intraband electron transitions, which are prevailing over interband conductivity terms up to terahertz frequencies. It is shown on the basis of equivalent circuit representation that a static magnetic bias changes a Drude dispersion characteristic of graphene into an extended Lorentz model supplemented with an additional branch accounting for the induced gyrotropy. The proposed FDTD updated equations are successfully validated with analytical results available in the literature. Computational efficiency of the algorithm is also tested.
引用
收藏
页码：1570 / 1578
页数：9
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