Coulomb scattering lifetime of a two-dimensional electron gas

Article

关键词: SYSTEMS;    TIME;   

DOI  :  10.1103/PhysRevB.53.9964

来源: SCIE

【 摘 要 】

Motivated by a recent tunneling experiment in a double quantum-well system, which reports an anomalously enhanced electronic scattering rate in a clean two-dimensional electron gas, we calculate the inelastic quasiparticle Lifetime due to electron-electron interaction in a single loop dynamically screened Coulomb interaction within the random-phase approximation. We obtain excellent quantitative agreement with the inelastic scattering rates in the tunneling experiment without any adjustable parameter, finding that the reported large (greater than or equal to a factor of 6) disagreement between theory and experiment arises from quantitative errors in the existing theoretical work and from the off-shell energy dependence of the electron self-energy.

【 授权许可】

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