Suppression of LO phonon scattering in Landau quantized quantum dots

B. N. Murdin, A. R. Hollingworth, M. Kamal-Saadi, R. T. Kotitschke, C. M. Ciesla, Carl R Pidgeon, P. C. Findlay, H. P M Pellemans, C. J G M Langerak, A. C. Rowe, R. A. Stradling, E. Gornik

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)


Picosecond time-resolved far-infrared measurements are presented of the scattering between conduction-band states in a doped quasi quantum dot. These states are created by the application of a magnetic field along the growth direction of an InAs/AlSb quantum well. A clear suppression of the cooling rate is seen, from 1012s-1 when the level spacing is equal to the phonon energy, to 1010s-1 away from this resonance, and thus the results provide unambiguous evidence for the phonon bottleneck. Furthermore, the lifetimes had only weak dependence on temperature between 4 and 80 K. © 1999 The American Physical Society.

Original languageEnglish
Pages (from-to)R7817-R7820
Number of pages4
JournalPhysical Review B: Condensed Matter and Materials Physics
Issue number12
Publication statusPublished - Mar 1999


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