Plasmonic Zitterbewegung in binary graphene sheet arrays.
Plasmonic Zitterbewegung in binary graphene sheet arrays.
复制标题
DOI：
10.1364/ol.40.002945
复制
发表时间：
2015-07
期刊：
影响因子：
3.6
通讯作者：
Yang Fan;B. Wang;He-Tian Huang;Kai Wang;H. Long;P. Lu
中科院分区：
文献类型：
--
作者：
Yang Fan;B. Wang;He-Tian Huang;Kai Wang;H. Long;P. Lu
从理论上研究了二元石墨烯片阵列中的等离子体激元Zitterbewegung（ZB）效应。通过交替改变阵列中单个石墨烯片的化学势，实现了两个微带的表面等离子体激元（SPP）模式。数值模拟表明，在阵列中的SPP经历特征抖动运动。等离子体激元ZB的振荡周期强烈依赖于传播常数失配，在微米范围内变化，而振幅可达数十纳米，使得ZB效应更容易在实践中观察到。
We theoretically investigate the plasmonic Zitterbewegung (ZB) effect in binary graphene sheet arrays (GSAs). The surface plasmon polariton (SPP) modes of two minibands are realized by alternately varying the chemical potentials of individual graphene sheets in the arrays. Numerical simulations show that SPPs in the array experience characteristic trembling motion. The oscillating periods of the plasmonic ZB are strongly dependent on the propagation constant mismatch and varied in the range of micrometer, while the amplitude reaches tens of nanometers, making the ZB effect easier to be observed in practice.