Unified Boltzmann-transport theory for the drag resistivity close to a second-order phase transition
arXiv:1306.5078 · doi:10.1103/PhysRevB.88.235311
Abstract
We present a unified Boltzmann-transport theory for the drag resistivity in two-component systems close to a second-order phase transition. We find general expressions for the drag resistivity in two and three spatial dimensions, for arbitrary population and mass imbalance, for particle- and hole-like bands, and show how to incorporate, at the Gaussian level, the effect of fluctuations close to a phase transition. We find that the proximity to the phase transition enhances the drag resistivity upon approaching the critical temperature from above, and we qualitatively derive the temperature dependence of this enhancement for various cases. In addition, we present numerical results for two concrete experimental systems: i) three-dimensional cold atomic Fermi gases close to a Stoner transition and ii) two-dimensional spatially-separated electron and hole systems in semiconductor double quantum wells.
15 pages, 5 figures
References in corpus (8)
- Coulomb Drag in the Exciton Regime in Electron-Hole Bilayers
- Anomalous Coulomb drag in electron-hole bilayers
- Collective oscillations of a Fermi gas in the unitarity limit: Temperature effects and the role of pair correlations
- Spin Drag and Spin-Charge Separation in Cold Fermi Gases
- Spin drag in an ultracold Fermi gas on the verge of a ferromagnetic instability
- Probing the topological exciton condensate via Coulomb drag
- Spin transport in a unitary Fermi gas close to the BCS transition
- Spin Drag in Ultracold Fermi Mixtures with Repulsive Interactions
Cited by in corpus (7)
- Coulomb drag
- Electron-hole pairing in graphene-GaAs heterostructures
- Universal Spin Transport and Quantum Bounds for Unitary Fermions
- Anomalous Coulomb Drag in Electron-Hole Bilayers due to the Formation of Excitons
- Electromagnetic properties of a double layer graphene system with electron-hole pairing
- Topological fluctuating electron-hole Cooper pairs in graphene-GaAs heterostructures
- Anomalous drag in electron-hole condensates with granulated order