Hydrodynamic Coulomb drag of strongly correlated electron liquids
Hydrodynamic Coulomb drag of strongly correlated electron liquids
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强相关电子液体的流体动力库仑阻力
DOI：
10.1103/physrevb.89.121104
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发表时间：
2013
影响因子：
3.7
通讯作者：
A. Andreev
中科院分区：
文献类型：
--
作者：
S. Apostolov;A. Levchenko;A. Andreev
我们发展了一个强关联载流子超净双层中库仑阻力的理论。在电子液体的平衡长度比层间距短的制度中，库仑阻力的主要贡献来自流体动力学密度波动。后者包括由波动的纵向应力驱动的等离子体激元，以及由温度波动和电子液体的热膨胀引起的扩散模式。我们表示的电子流体的动力学系数的拖曳电阻率。我们的结果是非微扰的相互作用强度，并没有假设费米液体的电子液体的行为。
We develop a theory of Coulomb drag in ultraclean double layers with strongly correlated carriers. In the regime where the equilibration length of the electron liquid is shorter than the interlayer spacing the main contribution to the Coulomb drag arises from hydrodynamic density fluctuations. The latter consist of plasmons driven by fluctuating longitudinal stresses, and diffusive modes caused by temperature fluctuations and thermal expansion of the electron liquid. We express the drag resistivity in terms of the kinetic coefficients of the electron fluid. Our results are nonperturbative in interaction strength and do not assume Fermi-liquid behavior of the electron liquid.