Abstract
We introduce an interlayer coherent composite Fermi liquid for bilayers, in which interlayer Coulomb repulsion drives exciton condensation of composite fermions. As a result, composite fermions propagate coherently between layers—even though electrons do not—and form bonding and antibonding Fermi seas. This phase is compressible with respect to symmetric currents but quantum Hall-like in the counterflow channel. Quantum oscillations of the composite Fermi seas generate a new series of incompressible states at per layer ( an integer), which is a bilayer analogue of Jain’s sequence.
- Received 26 August 2009
DOI:https://doi.org/10.1103/PhysRevLett.103.256403
©2009 American Physical Society