Meron excitations in the nu =1 quantum Hall bilayer and the plasma analogy
arXiv:cond-mat/0412536 · doi:10.1103/PhysRevB.72.155306
Abstract
We study meron quasiparticle excitations in the ν= 1 quantum Hall bilayer. Considering the well known single meron state, we introduce its effective form, valid in the longdistance limit. That enables us to propose two (and more) meron states in the same limit. Further, establishing a plasma analogy of the (111) ground state, we find the impurities that play the role of merons and derive meron charge distributions. Using the introduced meron constructions in generalized (mixed) ground states and corresponding plasmas for arbitrary distance between the layers, we calculate the interaction between the construction implied impurities. We also find a correspondence between the impurity interactions and meron interactions. This suggests a possible explanation of the deconfinement of the merons recently observed in the experiments.
arXiv comment5 pages, 3 figures
References in corpus (10)
- Bose-Einstein Condensation of Excitons in Bilayer Electron Systems
- Spontaneous Inter-layer Coherence in Double-Layer Quantum-Hall Systems I: Charged Vortices and Kosterlitz-Thouless Phase Transitions
- Counterflow measurements in strongly correlated GaAs hole bilayers: evidence for electron-hole pairing
- Vanishing Hall Resistance at High Magnetic Field in a Double Layer Two-Dimensional Electron System
- Activated Transport in the individual Layers that form the =1 Exciton Condensate
- Phase Diagram for Quantum Hall Bilayers at
- Coexistence of Composite-Bosons and Composite-Fermions in nu=1/2 + 1/2 Quantum Hall Bilayers
- Microscopic Functional Integral Theory of Quantum Fluctuations in Double-Layer Quantum Hall Ferromagnets
- Investigation of trial wavefunction approach to bilayer Quantum Hall systems
- Bulk and edge correlations in the compressible half-filled quantum Hall state