Prediction of the quantization of magnetic flux in double layer exciton superfluids

Abstract

Currently a way is lacking to detect unambiguously the possible phase coherence of an exciton condensate in an electron-hole double layer. Here we show that despite the fact that excitons are charge-neutral, the double layer exciton superfluid exhibits a diamagnetic response. In devices with specific circular geometry the magnetic flux threading between the layers must be quantized in units of $\frac{h}{e}{\chi }_m$ where ${\chi }_m$ is the diamagnetic susceptibility of the device. We discuss possible experimental realizations of the predicted unconventional flux quantization.

arXiv comment4 pages, 3 figures

References in corpus (17)

• Large-Area Synthesis of High-Quality and Uniform Graphene Films on Copper Foils
• 30 inch Roll-Based Production of High-Quality Graphene Films for Flexible Transparent Electrodes
• Dissipationless Quantum Spin Current at Room Temperature
• Bose-Einstein Condensation of Excitons in Bilayer Electron Systems
• Room-Temperature Superfluidity in Graphene Bilayers
• Exciton condensation and charge fractionalization in a topological insulator film
• How to make a bilayer exciton condensate flow
• Excitonic condensation of massless fermions in graphene bilayers
• Electron screening and excitonic condensation in double-layer graphene systems
• Parallel electron-hole bilayer conductivity from electronic interface reconstruction
• Non-Abelian hydrodynamics and the flow of spin in spin-orbit coupled substances
• Dipolar superfluidity in electron-hole bilayer systems
• Exciton formation in graphene bilayer
• Confined Coherence in Strongly Correlated Anisotropic Metals
• Vortices, zero modes and fractionalization in bilayer-graphene exciton condensate
• Electron-Hole Liquids in Transition Metal Oxide Heterostructures
• Vortex matter and generalizations of dipolar superfluidity concept in layered systems

Cited by in corpus (7)

• Exciton condensation in strongly correlated electron bilayers
• Flux Quantization Due to Monopole and Dipole Currents
• Theory for electric dipole superconductivity with an application for bilayer excitons
• Nonlocal Andreev reflection, fractional charge and current-phase relation in topological bilayer exciton condensate junctions
• Enhancement of spin propagation due to interlayer exciton condensation
• Diamagnetism and flux creep in bilayer exciton superfluids
• Excitonic gap formation in neutral bilayer structures