论文标题
石墨烯中的流体动力集体模式
Hydrodynamic collective modes in graphene
论文作者
论文摘要
集体行为是流体动力传输方法中最有趣的方面之一。在这里，我们提供了石墨烯中流体动力集体模式的分散关系的一致，统一的计算。考虑到粘性效应，我们表明石墨烯中的流体动力声模式在足够大的动量尺度上被过度阻尼。将线性化理论扩展到流体动力学状态之外，我们将扩散的流体动力电荷密度波动与等离子体联系起来。
Collective behavior is one of the most intriguing aspects of the hydrodynamic approach to electronic transport. Here we provide a consistent, unified calculation of the dispersion relations of the hydrodynamic collective modes in graphene. Taking into account viscous effects, we show that the hydrodynamic sound mode in graphene becomes overdamped at sufficiently large momentum scales. Extending the linearized theory beyond the hydrodynamic regime, we connect the diffusive hydrodynamic charge density fluctuations with plasmons.
