论文标题
在电子孔冷凝物中的异常阻力与颗粒级
Anomalous drag in electron-hole condensates with granulated order
论文作者
论文摘要
我们解释了在局部电子孔对凝结与疾病诱导的载体密度变化之间的相互作用方面，在双层电子孔系统中低温下观察到的强层间阻力阻力。平滑疾病将冷凝物驱动到砂光相中，其中层间相干性仅在良好的分离和断开的区域或谷物中形成，并且电子和孔的密度意外匹配。然后，阻力阻力由电荷散射在电荷散射之间支配，而在层之间转移动量的晶粒之间的层。我们表明，这种情况可以解释阻力电阻率对温度的依赖性以及层之间的平均电荷不平衡。
We explain the strong interlayer drag resistance observed at low temperatures in bilayer electron-hole systems in terms of an interplay between local electron-hole-pair condensation and disorder-induced carrier density variations. Smooth disorder drives the condensate into a granulated phase where interlayer coherence is formed only in well separated and disconnected regions, or grains, and the densities of electrons and holes accidentally match. The drag resistance is then dominated by Andreev scattering of charge carries between layers at the grains that transfers momentum between layers. We show that this scenario can account for the observed dependence of the drag resistivity on temperature, and on the average charge imbalance between layers.
