Probing the topological exciton condensate via Coulomb drag

Abstract

The onset of exciton condensation in a topological insulator thin film was recently predicted. We calculate the critical temperature for this transition, taking into account screening effects. Furthermore, we show that the proximity to this transition can be probed by measuring the Coulomb drag resistivity between the surfaces of the thin film as a function of temperature. This resistivity shows an upturn upon approaching the exciton-condensed state.

4 pages, 3 figures

References in corpus (13)

• Discovery (theoretical prediction and experimental observation) of a large-gap topological-insulator class with spin-polarized single-Dirac-cone on the surface
• Room-Temperature Superfluidity in Graphene Bilayers
• Exciton condensation and charge fractionalization in a topological insulator film
• Coulomb Drag in the Exciton Regime in Electron-Hole Bilayers
• Excitonic condensation of massless fermions in graphene bilayers
• Electron screening and excitonic condensation in double-layer graphene systems
• Anomalous Coulomb drag in electron-hole bilayers
• Coulomb Drag in Graphene
• Coulomb drag in monolayer and bilayer graphene
• Coulomb drag in graphene single layers separated by a thin spacer
• Coulomb Drag and High Resistivity Behavior in Double Layer Graphene
• Electron-electron interactions in decoupled graphene layers
• Spin drag in an ultracold Fermi gas on the verge of a ferromagnetic instability

Cited by in corpus (32)

• Coulomb drag
• Electron-hole pairing in graphene-GaAs heterostructures
• Coulomb drag in graphene near the Dirac point
• Excitonic Superfluidity and Screening in Electron-Hole Bilayer Systems
• Theory of Coulomb drag for massless Dirac fermions
• Evidence from quantum Monte Carlo of large gap superfluidity and BCS-BEC crossover in double electron-hole layers
• Electron-hole pairing in topological insulator thin film
• Coulomb Drag in Altermagnets
• Chiral superfluid states in hybrid graphene heterostructures
• Tunable Coupling between Surface States of a Three-Dimensional Topological Insulator in the Quantum Hall Regime
• Plasmon and dielectric background inhomogeneity enhancement of Coulomb drag in graphene double-layer structures
• Theory of Coulomb Drag in Spatially Inhomogeneous Materials
• Exciton topology and condensation in a model quantum spin Hall insulator
• Topological exciton condensate of imbalanced electrons and holes
• Anomalous Coulomb Drag in Electron-Hole Bilayers due to the Formation of Excitons
• Spin transport in a unitary Fermi gas close to the BCS transition
• Drag effect and Cooper electron-hole pair fluctuations in a topological insulator film
• Photoemission spectra of massless Dirac fermions on the verge of exciton condensation
• Theory of carrier transport in graphene double-layer structure with carrier imbalance
• Interacting drift-diffusion theory for photoexcited electron-hole gratings in semiconductor quantum wells
• Coulomb drag in topological insulator films
• Fluctuational internal Josephson effect in topological insulator film
• Unified Boltzmann-transport theory for the drag resistivity close to a second-order phase transition
• Broken symmetry and competing orders in Weyl semimetal interfaces
• Coulomb drag in topological materials
• Superfluidity of a rarefied gas of electron-hole pairs in a bilayer system
• Electromagnetic properties of a double layer graphene system with electron-hole pairing
• Interplay of interlayer pairing and many-body screening in a bilayer of dipolar fermions
• Nanosecond dynamics in intrinsic topological insulator ${\text{Bi}}_{2-x}{\text{Sb}}_x{\text{Se}}_3$ revealed by time-resolved optical reflectivity
• Topological fluctuating electron-hole Cooper pairs in graphene-GaAs heterostructures
• Topological hybrid electron-hole Cooper pairing
• Anomalous drag in electron-hole condensates with granulated order