Abstract
A double-layer system in a strong perpendicular magnetic field is considered. Assuming a random potential in each layer to be smooth, we calculate the positions of the delocalized states within a wide range of the tunneling strengths. We show that each delocalized state is composed of alternating pieces of equipotentials from different layers. These combined equipotentials form a percolation network, the nodes of which are the regions where equipotentials from different layers nearly touch each other.
- Received 18 April 1997
DOI:https://doi.org/10.1103/PhysRevB.56.3965
©1997 American Physical Society