论文标题
二维DIRAC系统中的热电反应：粒子孔对的作用
Thermo-electric response in two-dimensional Dirac systems: the role of particle-hole pairs
论文作者
论文摘要
干净的二维迪拉克系统因观察相互作用的电子系统中的流体动力传输行为而受到了很多关注。这主要是由于在制备具有足够较强相互作用的超纯样品方面的进步。在本文中，我们研究了集体模式在这些系统的热电传输特性中的作用。我们发现动态颗粒孔对，等离子对热导率产生了相当大的贡献。虽然狄拉克点的增加是中等的，但它倾向于更大的掺杂。我们怀疑，这是超级二维电子系统的通用特征，也适用于退化系统。
Clean two-dimensional Dirac systems have received a lot of attention for being a prime candidate to observe hydrodynamical transport behavior in interacting electronic systems. This is mostly due to recent advances in the preparation of ultrapure samples with sufficiently strong interactions. In this paper, we investigate the role of collective modes in the thermo-electric transport properties of those systems. We find that dynamical particle-hole pairs, plasmons, make a sizeable contribution to the thermal conductivity. While the increase at the Dirac point is moderate, it becomes large towards larger doping. We suspect, that this is a generic feature of ultraclean two-dimensional electronic systems, also applicable to degenerate systems.
