石墨烯PN结中的太赫兹磁等离子体能量集中和分裂
Terahertz Magnetoplasmon Energy Concentration and Splitting in Graphene PN Junctions
摘要：
研究了太赫兹等离激元和磁等离激元沿电掺杂和化学掺杂石墨烯pn结的传播。它示出，这样的结支持非互易磁等离子体模式得到集中在一个方向上的交界处的中间，并在另一个方向上从交界处的中间分离下的应用程序的外部静态磁场。这种现象是由圆双折射和载流子密度不均匀性的综合作用引起的。它可以用于实现等离子体隔离器。
英文摘要：
Terahertz plasmons and magnetoplasmons propagating along electrically and chemically doped graphene p-n junctions are investigated. It is shown that such junctions support non-reciprocal magnetoplasmonic modes which get concentrated at the middle of the junction in one direction and split away from the middle of the junction in the other direction under the application of an external static magnetic field. This phenomenon follows from the combined effects of circular birefringence and carrier density non-uniformity. It can be exploited for the realization of plasmonic isolators.
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