Quantum Lifetime in Ultra-High Quality GaAs Quantum Wells: Relationship to ${\Delta }_{5/2}$ and Impact of Density Fluctuations

Qi Qian, James R. Nakamura, Saeed Fallahi +6

We consider quantum lifetime derived from low-field Shubnikov-de Haas oscillations as a metric of quality of the two-dimensional electron gas in GaAs quantum wells that expresses l…