We study the fractional quantum Hall effect in a bilayer with charge-distribution imbalance induced, for instance, by a bias gate voltage. The bilayer can either be intrinsic or it can be formed spontaneously in wide quantum wells, due to the Coulomb repulsion between electrons. We focus on fractional quantum Hall effect in asymmetric bilayer systems at filling factor ν = 4/11 and show that an asymmetric Halperin-like trial wavefunction gives a valid description of the ground state of the system.
Journal of Physics Conference Series
- Pub Date:
- August 2013
- Condensed Matter - Strongly Correlated Electrons;
- Condensed Matter - Mesoscale and Nanoscale Physics
- 6 pages, 5 figures, HMF-20 proceedings