| Relaxation of high-energy quasiparticle distributions: electron-electron scattering in a two-dimensional electron gas (2003) | |||||||||
Abstract | |||||||||
| A theory is developed for the evolution of the non-equilibrium distribution of quasiparticles when the scattering rate decreases due to particle collisions. We propose a "modified one-collision approximation" which is most effective for high-energy quasiparticle distributions. This method is used to explain novel measurements of the non-monotonic energy dependence of the signal of scattered electrons in a 2D system. The observed effect is related to a crossover from the ballistic to the hydrodynamic regime of electron flow.. Comment: 6 pages, 3 figures | |||||||||
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