Drag in paired electron-hole layers

TL;DR

This paper studies the drag resistance behavior in electron-hole double layers with excitonic condensates, revealing a discontinuous jump at the transition temperature and divergence at zero temperature.

Contribution

It introduces a theoretical model based on minimum dissipation to analyze transresistance in excitonic condensates, highlighting unique temperature-dependent effects.

Findings

Drag resistance jumps at the condensation temperature

Resistance diverges as temperature approaches zero

Theoretical framework based on minimum dissipation

Abstract

We investigate transresistance effects in electron-hole double layer systems with an excitonic condensate. Our theory is based on the use of a minimum dissipation premise to fix the current carried by the condensate. We find that the drag resistance jumps discontinuously at the condensation temperature and diverges as the temperature approaches zero.