Superconductivity of electron-hole pairs in a bilayer graphene system in a quantizing magnetic field
arXiv:0912.4432 · doi:10.1063/1.3224730
Abstract
The state with a spontaneous interlayer phase coherence in a graphene based bilayer quantum Hall system is studied. This state can be considered as a gas of superfluid electron-hole pairs with the components of the pair belonging to different layers. Superfluid flux of such pairs is equivalent to two electrical supercurrents in the layers. It is shown that the state with the interlayer phase coherence emerges in the graphene system if a certain imbalance of the Landau level filling factors of the layers is created. We obtain the temperature of transition into the superfluid state, the maximum interlayer distance at which the phase coherence is possible, and the critical values of the supercurrent. The advantages of use of graphene systems instead of GaAs heterostructures for the realization of the bilayer electron-hole superconductivity is discussed.
16 pages, 8 figures
References in corpus (13)
- Electric Field Effect in Atomically Thin Carbon Films
- The electronic properties of graphene
- Room-Temperature Quantum Hall Effect in Graphene
- Unconventional Integer Quantum Hall effect in graphene
- Room-Temperature Superfluidity in Graphene Bilayers
- Excitonic condensation of massless fermions in graphene bilayers
- Electron screening and excitonic condensation in double-layer graphene systems
- Bose-Einstein condensation and Superfluidity of magnetoexcitons in Graphene
- Exciton condensate at a total filling factor of 1 in Corbino 2D electron bilayers
- Coherent Tunneling in Exciton Condensates of Bilayer Quantum Hall Systems
- Stationary waves in a supersonic flow of a two-component Bose gas
- Critical velocities in two-component superfluid Bose gases
- Critical currents and giant non-dissipative drag for superfluid electron-hole pairs in quantum Hall multilayers
Cited by in corpus (9)
- Coulomb drag
- Graphene Bilayer Structures with Superfluid Magnetoexcitons
- Transport properties of ν=1 quantum Hall bilayers. Phenomenological description
- Electromagnetic properties of a double layer graphene system with electron-hole pairing
- Stationary waves in a superfluid exciton gas in quantum Hall bilayers
- Superfluidity of a rarefied gas of electron-hole pairs in a bilayer system
- Stationary waves in a superfluid gas of electron-hole pairs in bilayers
- Strong enhancement of third harmonic generation in a double layer graphene system caused by electron-hole pairing
- Electron-hole pairing in topological insulator heterostructures in the quantum Hall state