@article{5872,
  author = {Cjgm Langerak and B. N. Murdin and C. M. Ciesla and J. Oswald and A. Homer and G. Springholz and G. Bauer and R. A. Stradling and M. Kamal-Saadi and E. Gornik and C. R. Pidgeon},
  title = {Landau-level lifetimes in PbTe nipi superlattices, PbTe/PbEuTe and InAs/AlSb quantum wells},
  abstract = {Landau-level lifetimes are determined from saturation cyclotron resonance (CR) in wide parabolic wells, quantum wells and bulk PbTe-Pb1-xEuxTe systems. These narrow gap structures exhibit strong band non-parabolicity necessary to terminate the normally equi-spaced Landau-level ladder. It was not possible to saturate the bulk sample, but short lifetimes, of between 1.5 and 8 ps, were obtained for the wide parabolic well and the quantum well, respectively, utilising a multi-level rate equation model. We also report the first pump-probe cyclotron resonance result in an InAs-AlSb quantum structure. The pump-probe experiment provides a direct determination of the lifetime, giving tau = 40 ps in this InAs-AlSb sample. This shows good agreement with an 8 x 8k.p calculation. (C) 1998 Elsevier Science B.V. All rights reserved.},
  year = {1998},
  journal = {Physica E},
  volume = {2},
  number = {1-4},
  pages = {121-125},
  month = {Jul},
  isbn = {1386-9477},
  doi = {10.1016/s1386-9477(98)00027-7},
  language = {eng},
}