The hunt for high-temperature superfluidity has received new impetus from the discovery of atomically thin stable materials. Electron-hole superfluidity in coupled ${\mathrm{MoSe}}_2-{\mathrm{WSe}}_2$ monolayers is investigated using a mean-field multiband model that includes band splitting caused by strong spin-orbit coupling. This splitting leads to a large energy misalignment of the electron and hole bands which is strongly modified by interchanging the doping of the monolayers. The choice of doping determines if the superfluidity is tunable from one to two components.

• Received 17 September 2019
• Revised 22 May 2020
• Accepted 22 May 2020

DOI:https://doi.org/10.1103/PhysRevB.101.220504