Drag resistance of two-dimensional electronic microemulsions

Motivated by recent experiments of Pillarisetty et al. [Phys. Rev. Lett. 90, 226801 (2003)], we present a theory of drag in electronic double layers at low electron concentration. We show that the drag effect in such systems is anomalously large, it has unusual temperature and magnetic field dependences associated with the Pomeranchuk effect, and does not vanish at zero temperature.