Perfect Coulomb drag in a dipolar excitonic insulator

Authors: Phuong X. Nguyen, Liguo Ma, Raghav Chaturvedi, Kenji Watanabe, Takashi Taniguchi, Jie Shan, Kin Fai Mak

Published: 2025-04-17

DOI: 10.1126/science.adl1829

Source: Full article


Abstract

Excitonic insulators (EIs) are a solid-state prototype for bosonic phases of matter that can support charge-neutral exciton currents. However, demonstration of exciton transport in EIs is difficult. In this work, we show that the strong interlayer excitonic correlation at equal electron and hole densities in MoSe