Quantum lifetime of 2D electron in magnetic field
  The lifetime of two dimensional electrons in GaAs quantum wells, placed in weak quantizing magnetic fields, is measured using a simple transport method in broad range of temperatures from 0.3 K to 20 K. The temperature variations of the electron lifetime are found to be in good agreement with conventional theory of electron-electron scattering in 2D systems. 
Scott Dietrich, S. A. Vitkalov, D. V. Dmitriev, A. A. Bykov
cond-mat.mes-hall cond-mat.str-el