Abstract
We have studied the excitation spectrum for a one-half filled Landau level in a two-layer system of interacting electrons, by finite-size calculations in a periodic rectangular geometry. The interlayer interaction is found to be important for obtaining a unique ground state and the required gap structure in the spectrum. On the basis of these observations, we predict that the fractional quantum Hall effect might be found at this filling in such a layered system.
- Received 24 August 1987
DOI:https://doi.org/10.1103/PhysRevLett.59.2784
©1987 American Physical Society